diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
new file mode 100644
index 0000000..8132cf8
--- /dev/null
+++ b/.github/workflows/check.yml
@@ -0,0 +1,14 @@
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+jobs:
+  check:
+    runs-on: "ubuntu-22.04"
+    steps:
+      - uses: "actions/checkout@v4"
+      - uses: "DeterminateSystems/nix-installer-action@main"
+      - uses: "DeterminateSystems/magic-nix-cache-action@main"
+      - name: Flake check
+        run: nix develop --command check
diff --git a/.github/workflows/flakehub-publish-tagged.yml b/.github/workflows/flakehub-publish-tagged.yml
index 1df8189..6203fbf 100644
--- a/.github/workflows/flakehub-publish-tagged.yml
+++ b/.github/workflows/flakehub-publish-tagged.yml
@@ -5,13 +5,14 @@ on:
 
 jobs:
   publish:
-    runs-on: "ubuntu-latest"
+    runs-on: "ubuntu-22.04"
     permissions:
       id-token: "write"
       contents: "read"
     steps:
-      - uses: "actions/checkout@v3"
+      - uses: "actions/checkout@v4"
       - uses: "DeterminateSystems/nix-installer-action@main"
+      - uses: "DeterminateSystems/magic-nix-cache-action@main"
       - uses: "DeterminateSystems/flakehub-push@main"
         with:
           visibility: "public"
diff --git a/README.md b/README.md
index 35a0d90..305f0ae 100644
--- a/README.md
+++ b/README.md
@@ -29,12 +29,15 @@ Once your preferred template has been initialized, you can use the provided shel
 
 | Language/framework/tool  | Template                      |
 | :----------------------- | :---------------------------- |
+| [Bun]                    | [`bun`](./bun/)               |
+| [C]/[C++]                | [`c-cpp`](./c-cpp/)           |
 | [Clojure]                | [`clojure`](./clojure/)       |
 | [C#][csharp]             | [`csharp`](./csharp/)         |
 | [Cue]                    | [`cue`](./cue/)               |
 | [Dhall]                  | [`dhall`](./dhall/)           |
 | [Elixir]                 | [`elixir`](./elixir/)         |
 | [Elm]                    | [`elm`](./elm/)               |
+| Empty (change at will)   | [`empty`](./empty)            |
 | [Gleam]                  | [`gleam`](./gleam/)           |
 | [Go]                     | [`go`](./go/)                 |
 | [Hashicorp] tools        | [`hashi`](./hashi/)           |
@@ -52,16 +55,36 @@ Once your preferred template has been initialized, you can use the provided shel
 | [Protobuf]               | [`protobuf`](./protobuf/)     |
 | [Pulumi]                 | [`pulumi`](./pulumi/)         |
 | [Purescript]             | [`purescript`](./purescript/) |
+| [R]                      | [`r`](./r/)                   |
 | [Ruby]                   | [`ruby`](./ruby/)             |
 | [Rust]                   | [`rust`](./rust/)             |
 | [Scala]                  | [`scala`](./scala/)           |
 | [Shell]                  | [`shell`](./shell/)           |
+| [Vlang]                  | [`vlang`](./vlang/)           |
 | [Zig]                    | [`zig`](./zig/)               |
 
 ## Template contents
 
 The sections below list what each template includes. In all cases, you're free to add and remove packages as you see fit; the templates are just boilerplate.
 
+### [`bun`](./bun/)
+
+- [bun] 1.1.8
+
+### [`c-cpp`](./c-cpp/)
+
+- [clang-tools] 17.0.6
+- [cmake] 3.28.3
+- [codespell] 2.2.6
+- [conan] 2.0.17
+- [cppcheck] 2.13.4
+- [doxygen] 1.10.0
+- [gdb] 14.1
+- [gtest] 1.12.1
+- [lcov] 1.0
+- [vcpkg]
+- [vcpkg-tool]
+
 ### [`clojure`](./clojure/)
 
 - [Clojure] 1.11.1.1347
@@ -102,6 +125,10 @@ The sections below list what each template includes. In all cases, you're free t
 - [Elm] 0.19.1
 - [elm2nix]
 
+### [Empty](./empty/)
+
+A dev template that's fully customizable.
+
 ### [`gleam`](./gleam/)
 
 - [Gleam] 0.30.0
@@ -139,6 +166,7 @@ The sections below list what each template includes. In all cases, you're free t
 - [Java] 20.0.1+9
 - [Maven] 3.9.2
 - [Gradle] 9.0.1
+- [jdtls] 1.31.0
 
 ### [`kotlin`](./kotlin/)
 
@@ -221,7 +249,12 @@ The sections below list what each template includes. In all cases, you're free t
 
 - [Python] 3.11.4
 - [pip] 23.0.1
-- [Virtualenv] 20.19.0
+
+### [`r`](./r/)
+
+- [R] 4.3.1
+- [rmarkdown] 2.22
+- [knitr] 1.43 ([pandoc] and [texlive])
 
 ### [`ruby`](./ruby/)
 
@@ -233,11 +266,11 @@ The sections below list what each template includes. In all cases, you're free t
 
   - From the `rust-toolchain.toml` file if present
   - From the `rust-toolchain` file if present
-  - Version 1.70.0 if neither is present
+  - Version 1.78.0 if neither is present
 
-- [rust-analyzer] 2023-07-10
-- [cargo-audit] 0.17.0
-- [cargo-deny] 0.12.1
+- [rust-analyzer] 2024-04-29
+- [cargo-edit] 0.12.2
+- [cargo-deny] 0.14.23
 
 ### [`scala`](./scala/)
 
@@ -248,6 +281,10 @@ The sections below list what each template includes. In all cases, you're free t
 
 - [shellcheck] 0.9.0
 
+### [`Vlang`](./vlang/)
+
+- [Vlang] 0.4.4
+
 ### [`zig`](./zig/)
 
 - [Zig] 0.10.1
@@ -258,15 +295,23 @@ All of the templates have only the root [flake](./flake.nix) as a flake input. T
 
 [boot]: https://www.boot-clj.com
 [buf]: https://github.com/bufbuild/buf
+[bun]: https://bun.sh/
+[C]: https://www.open-std.org/jtc1/sc22/wg14
+[C++]: https://isocpp.org
 [cabal]: https://www.haskell.org/cabal
 [cachix]: https://www.cachix.org
 [cargo]: https://doc.rust-lang.org/cargo
 [cargo-audit]: https://crates.io/crates/cargo-audit
 [cargo-deny]: https://crates.io/crates/cargo-deny
+[clang-tools]: https://clang.llvm.org/
 [clippy]: https://github.com/rust-lang/rust-clippy
 [clojure]: https://clojure.org
+[cmake]: https://cmake.org/
+[codespell]: https://github.com/codespell-project/codespell
 [composer]: https://getcomposer.org/
+[conan]: https://conan.io/
 [conftest]: https://www.conftest.dev
+[cppcheck]: http://cppcheck.sourceforge.net/
 [csharp]: https://dotnet.microsoft.com/en-us/languages/csharp
 [cue]: https://cuelang.org
 [damon]: https://github.com/hashicorp/damon
@@ -282,11 +327,13 @@ All of the templates have only the root [flake](./flake.nix) as a flake input. T
 [dhall-toml]: https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-toml
 [dhall-yaml]: https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-yaml
 [dotnet]: https://dotnet.microsoft.com/en-us/
+[doxygen]: https://www.doxygen.nl/
 [dune]: https://dune.build
 [elixir]: https://elixir-lang.org
 [elm]: https://elm-lang.org
 [elm2nix]: https://github.com/cachix/elm2nix
 [flake-utils]: https://github.com/numtide/flake-utils
+[gdb]: https://www.gnu.org/software/gdb/
 [gigalixir]: https://www.gigalixir.com
 [gleam]: https://gleam.run
 [go]: https://go.dev
@@ -294,14 +341,18 @@ All of the templates have only the root [flake](./flake.nix) as a flake input. T
 [goimports]: https://pkg.go.dev/golang.org/x/tools/cmd/goimports
 [golangci-lint]: https://github.com/golangci/golangci-lint
 [gradle]: https://gradle.org
+[gtest]: https://github.com/google/googletest
 [hashicorp]: https://hashicorp.com
 [haskell]: https://haskell.org
 [haxe]: https://haxe.org/
 [iex]: https://hexdocs.pm/iex/IEx.html
 [java]: https://java.com
+[jdtls]: https://projects.eclipse.org/projects/eclipse.jdt.ls
 [jq]: https://jqlang.github.io/jq
+[knitr]: https://yihui.org/knitr/
 [kotlin]: https://kotlinlang.org
 [latex]: https://www.latex-project.org/
+[lcov]: https://ltp.sourceforge.net/coverage/lcov.php
 [leiningen]: https://leiningen.org
 [levant]: https://github.com/hashicorp/levant
 [lorri]: https://github.com/target/lorri
@@ -328,6 +379,7 @@ All of the templates have only the root [flake](./flake.nix) as a flake input. T
 [odoc]: https://github.com/ocaml/odoc
 [omnisharp-roslyn]: https://github.com/OmniSharp/omnisharp-roslyn
 [opa]: https://openpolicyagent.org
+[pandoc]: https://pandoc.org/
 [packer]: https://packer.io
 [pip]: https://pypi.org/project/pip
 [phoenix]: https://phoenixframework.org
@@ -339,7 +391,9 @@ All of the templates have only the root [flake](./flake.nix) as a flake input. T
 [purescript-language-server]: https://github.com/nwolverson/purescript-language-server
 [purs-tidy]: https://github.com/natefaubion/purescript-tidy
 [python]: https://python.org
+[r]: https://www.r-project.org/
 [release]: https://github.com/NixOS/nixpkgs/releases/tag/22.11
+[rmarkdown]: https://rmarkdown.rstudio.com/
 [ruby]: https://ruby-lang.org
 [rust]: https://rust-lang.org
 [rust-analyzer]: https://rust-analyzer.github.io
@@ -355,7 +409,9 @@ All of the templates have only the root [flake](./flake.nix) as a flake input. T
 [texlive]: https://www.tug.org/texlive/
 [tflint]: https://github.com/terraform-linters/tflint
 [vault]: https://www.vaultproject.io
-[virtualenv]: https://pypi.org/project/virtualenv
+[vcpkg]: https://vcpkg.io/
+[vcpkg-tool]: https://github.com/microsoft/vcpkg-tool
 [vulnix]: https://github.com/flyingcircusio/vulnix
 [yarn]: https://yarnpkg.com
+[vlang]: https://vlang.io/
 [zig]: https://ziglang.org
diff --git a/bun/.envrc b/bun/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/bun/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/bun/flake.lock b/bun/flake.lock
new file mode 100644
index 0000000..b5acb97
--- /dev/null
+++ b/bun/flake.lock
@@ -0,0 +1,25 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1715787315,
+        "narHash": "sha256-cYApT0NXJfqBkKcci7D9Kr4CBYZKOQKDYA23q8XNuWg=",
+        "rev": "33d1e753c82ffc557b4a585c77de43d4c922ebb5",
+        "revCount": 626834,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.626834%2Brev-33d1e753c82ffc557b4a585c77de43d4c922ebb5/018f8037-433d-77f3-b4bb-e542e48f7fd6/source.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/bun/flake.nix b/bun/flake.nix
new file mode 100644
index 0000000..53b46e4
--- /dev/null
+++ b/bun/flake.nix
@@ -0,0 +1,25 @@
+{
+  description = "A Nix-flake-based Bun development environment";
+
+  inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
+
+  outputs = { self, nixpkgs }:
+    let
+      overlays = [
+        (final: prev: rec {
+          bun = prev.bun;
+        })
+      ];
+      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
+      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
+        pkgs = import nixpkgs { inherit overlays system; };
+      });
+    in
+    {
+      devShells = forEachSupportedSystem ({ pkgs }: {
+        default = pkgs.mkShell {
+          packages = with pkgs; [ bun ];
+        };
+      });
+    };
+}
diff --git a/c-cpp/.envrc b/c-cpp/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/c-cpp/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/c-cpp/flake.lock b/c-cpp/flake.lock
new file mode 100644
index 0000000..863caf5
--- /dev/null
+++ b/c-cpp/flake.lock
@@ -0,0 +1,25 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1711001935,
+        "narHash": "sha256-URtGpHue7HHZK0mrHnSf8wJ6OmMKYSsoLmJybrOLFSQ=",
+        "rev": "20f77aa09916374aa3141cbc605c955626762c9a",
+        "revCount": 600876,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.600876%2Brev-20f77aa09916374aa3141cbc605c955626762c9a/018e65e3-9c1d-74a8-acde-67868b074670/source.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/c-cpp/flake.nix b/c-cpp/flake.nix
new file mode 100644
index 0000000..15e740a
--- /dev/null
+++ b/c-cpp/flake.nix
@@ -0,0 +1,36 @@
+{
+  description = "A Nix-flake-based C/C++ development environment";
+
+  inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
+
+  outputs = { self, nixpkgs }:
+    let
+      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
+      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
+        pkgs = import nixpkgs { inherit system; };
+      });
+    in
+    {
+      devShells = forEachSupportedSystem ({ pkgs }: {
+        default = pkgs.mkShell.override {
+          # Override stdenv in order to change compiler:
+          # stdenv = pkgs.clangStdenv;
+        }
+        {
+          packages = with pkgs; [
+            clang-tools
+            cmake
+            codespell
+            conan
+            cppcheck
+            doxygen
+            gtest
+            lcov
+            vcpkg
+            vcpkg-tool
+          ] ++ (if system == "aarch64-darwin" then [ ] else [ gdb ]);
+        };
+      });
+    };
+}
+
diff --git a/clojure/flake.lock b/clojure/flake.lock
index d4ecad3..1cbfc64 100644
--- a/clojure/flake.lock
+++ b/clojure/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/csharp/flake.lock b/csharp/flake.lock
index d4ecad3..1cbfc64 100644
--- a/csharp/flake.lock
+++ b/csharp/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/cue/flake.lock b/cue/flake.lock
index d4ecad3..1cbfc64 100644
--- a/cue/flake.lock
+++ b/cue/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/dhall/flake.lock b/dhall/flake.lock
index d4ecad3..1cbfc64 100644
--- a/dhall/flake.lock
+++ b/dhall/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/elixir/flake.lock b/elixir/flake.lock
index 7a0cc8f..f694c77 100644
--- a/elixir/flake.lock
+++ b/elixir/flake.lock
@@ -20,12 +20,12 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1719075281,
+        "narHash": "sha256-CyyxvOwFf12I91PBWz43iGT1kjsf5oi6ax7CrvaMyAo=",
+        "rev": "a71e967ef3694799d0c418c98332f7ff4cc5f6af",
+        "revCount": 642660,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.642660%2Brev-a71e967ef3694799d0c418c98332f7ff4cc5f6af/0190462b-ab23-7472-8ae7-ae4f8bde47d9/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/elixir/flake.nix b/elixir/flake.nix
index 912e459..6b248cd 100644
--- a/elixir/flake.nix
+++ b/elixir/flake.nix
@@ -10,70 +10,91 @@
     };
   };
 
-  outputs = { self, nixpkgs, flake-utils }:
-    flake-utils.lib.eachDefaultSystem (system:
-    let
-      pkgs = nixpkgs.legacyPackages.${system};
-
-      # documentation
-      # https://nixos.org/manual/nixpkgs/stable/#sec-beam
-
-      # ==== ERLANG ====
-
-      # use whatever version is currently defined in nixpkgs
-      erlang = pkgs.beam.interpreters.erlang;
-
-      # use latest version of Erlang 26
-      # erlang = pkgs.beam.interpreters.erlang_26;
-
-      # specify exact version of Erlang OTP
-      # erlang = pkgs.beam.interpreters.erlang.override {
-      #   version = "26.2.2";
-      #   sha256 = "sha256-7S+mC4pDcbXyhW2r5y8+VcX9JQXq5iEUJZiFmgVMPZ0=";
-      # }
-
-      # ==== BEAM packages ====
-
-      # all BEAM packages will be compile with your preffered erlang version
-      pkgs-beam = pkgs.beam.packagesWith erlang;
-
-      # ==== Elixir ====
-
-      # use whatever version is currently defined in nixpkgs
-      elixir = pkgs-beam.elixir;
-
-      # use latest version of Elixir 1.16
-      # elixir = pkgs-beam.elixir_1_16;
-
-      # specify exact version of Elixir
-      # elixir = pkgs-beam.elixir.override {
-      #   version = "1.16.1";
-      #   sha256 = "sha256-rjUt3gCUszCbzGE7BriwH3ptrV81dqNB/d0nVOXrcGI=";
-      # };
-    in
-    {
-      devShells.default = pkgs.mkShell {
-        packages = [
-          # use the Elixr/OTP versions defined above; will also install OTP, mix, hex, rebar3
-          elixir
-
-          # mix needs it for downloading dependencies
-          pkgs.git
-
-          # probably needed for your Phoenix assets
-          pkgs.nodejs_20
-        ] ++
-        # Linux only
-        pkgs.lib.optionals pkgs.stdenv.isLinux (with pkgs; [ gigalixir inotify-tools libnotify ]) ++
-        # macOS only
-        pkgs.lib.optionals pkgs.stdenv.isDarwin (with pkgs.darwin.apple_sdk.frameworks; [ pkgs.terminal-notifier CoreFoundation CoreServices ]);
-
-        # some sane defaults for iex session
-        shellHooks = ''
-          export ERL_AFLAGS="+pc unicode -kernel shell_history enabled"
-          export ELIXIR_ERL_OPTIONS="+sssdio 128"
-        '';
-      };
-    }
-  );
+  outputs =
+    { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+
+        # documentation
+        # https://nixos.org/manual/nixpkgs/stable/#sec-beam
+
+        # ==== ERLANG ====
+
+        # use whatever version is currently defined in nixpkgs
+        # erlang = pkgs.beam.interpreters.erlang;
+
+        # use latest version of Erlang 27
+        erlang = pkgs.beam.interpreters.erlang_27;
+
+        # specify exact version of Erlang OTP
+        # erlang = pkgs.beam.interpreters.erlang.override {
+        #   version = "26.2.2";
+        #   sha256 = "sha256-7S+mC4pDcbXyhW2r5y8+VcX9JQXq5iEUJZiFmgVMPZ0=";
+        # }
+
+        # ==== BEAM packages ====
+
+        # all BEAM packages will be compile with your preferred erlang version
+        pkgs-beam = pkgs.beam.packagesWith erlang;
+
+        # ==== Elixir ====
+
+        # use whatever version is currently defined in nixpkgs
+        # elixir = pkgs-beam.elixir;
+
+        # use latest version of Elixir 1.17
+        elixir = pkgs-beam.elixir_1_17;
+
+        # specify exact version of Elixir
+        # elixir = pkgs-beam.elixir.override {
+        #   version = "1.17.1";
+        #   sha256 = "sha256-a7A+426uuo3bUjggkglY1lqHmSbZNpjPaFpQUXYtW9k=";
+        # };
+
+      in
+      {
+        devShells.default = pkgs.mkShell {
+          packages =
+            [
+              # use the Elixr/OTP versions defined above; will also install OTP, mix, hex, rebar3
+              elixir
+
+              # mix needs it for downloading dependencies
+              pkgs.git
+
+              # probably needed for your Phoenix assets
+              pkgs.nodejs_20
+            ]
+            ++
+            # Linux only
+            pkgs.lib.optionals pkgs.stdenv.isLinux (
+              with pkgs;
+              [
+                gigalixir
+                inotify-tools
+                libnotify
+              ]
+            )
+            ++
+              # macOS only
+              pkgs.lib.optionals pkgs.stdenv.isDarwin (
+                with pkgs;
+                [
+                  terminal-notifier
+                  darwin.apple_sdk.frameworks.CoreFoundation
+                  darwin.apple_sdk.frameworks.CoreServices
+                ]
+              );
+
+          # some sane defaults for iex session
+          env = {
+            ERL_INCLUDE_PATH = "${erlang}/lib/erlang/usr/include";
+            ERL_AFLAGS = "+pc unicode -kernel shell_history enabled";
+            ELIXIR_ERL_OPTIONS = "+sssdio 128";
+          };
+        };
+      }
+    );
 }
diff --git a/elm/flake.lock b/elm/flake.lock
index d4ecad3..1cbfc64 100644
--- a/elm/flake.lock
+++ b/elm/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/empty/.envrc b/empty/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/empty/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/empty/flake.lock b/empty/flake.lock
new file mode 100644
index 0000000..1cbfc64
--- /dev/null
+++ b/empty/flake.lock
@@ -0,0 +1,25 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/empty/flake.nix b/empty/flake.nix
new file mode 100644
index 0000000..e02b193
--- /dev/null
+++ b/empty/flake.nix
@@ -0,0 +1,39 @@
+{
+  description = "An empty flake template that you can adapt to your own environment";
+
+  # Flake inputs
+  inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
+
+  # Flake outputs
+  outputs = { self, nixpkgs }:
+    let
+      # The systems supported for this flake
+      supportedSystems = [
+        "x86_64-linux" # 64-bit Intel/AMD Linux
+        "aarch64-linux" # 64-bit ARM Linux
+        "x86_64-darwin" # 64-bit Intel macOS
+        "aarch64-darwin" # 64-bit ARM macOS
+      ];
+
+      # Helper to provide system-specific attributes
+      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
+        pkgs = import nixpkgs { inherit system; };
+      });
+    in
+    {
+      devShells = forEachSupportedSystem ({ pkgs }: {
+        default = pkgs.mkShell {
+          # The Nix packages provided in the environment
+          # Add any you need here
+          packages = with pkgs; [ ];
+
+          # Set any environment variables for your dev shell
+          env = { };
+
+          # Add any shell logic you want executed any time the environment is activated
+          shellHook = ''
+          '';
+        };
+      });
+    };
+}
diff --git a/flake.lock b/flake.lock
index 0f56f8b..2ddc5f0 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
+        "lastModified": 1706683685,
+        "narHash": "sha256-FtPPshEpxH/ewBOsdKBNhlsL2MLEFv1hEnQ19f/bFsQ=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
+        "rev": "5ad9903c16126a7d949101687af0aa589b1d7d3d",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 100df82..b48f42c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -8,35 +8,70 @@
       overlays = [
         (final: prev:
           let
-            exec = pkg: "${prev.${pkg}}/bin/${pkg}";
-          in
-          {
-            format = prev.writeScriptBin "format" ''
-              ${exec "nixpkgs-fmt"} **/*.nix
-            '';
-            dvt = prev.writeScriptBin "dvt" ''
-              if [ -z $1 ]; then
-                echo "no template specified"
-                exit 1
-              fi
-
-              TEMPLATE=$1
-
-              ${exec "nix"} \
-                --experimental-features 'nix-command flakes' \
-                flake init \
-                --template \
-                "github:the-nix-way/dev-templates#''${TEMPLATE}"
-            '';
-            update = prev.writeScriptBin "update" ''
-              for dir in `ls -d */`; do # Iterate through all the templates
+            getSystem = "SYSTEM=$(nix eval --impure --raw --expr 'builtins.currentSystem')";
+            forEachDir = exec: ''
+              for dir in */; do
                 (
-                  cd $dir
-                  ${exec "nix"} flake update # Update flake.lock
-                  ${exec "nix"} flake check  # Make sure things work after the update
+                  cd "''${dir}"
+
+                  ${exec}
                 )
               done
             '';
+          in
+          {
+            format = final.writeShellApplication {
+              name = "format";
+              runtimeInputs = with final; [ nixpkgs-fmt ];
+              text = "nixpkgs-fmt '**/*.nix'";
+            };
+
+            # only run this locally, as Actions will run out of disk space
+            build = final.writeShellApplication {
+              name = "build";
+              text = ''
+                ${getSystem}
+
+                ${forEachDir ''
+                  echo "building ''${dir}"
+                  nix build ".#devShells.''${SYSTEM}.default"
+                ''}
+              '';
+            };
+
+            check = final.writeShellApplication {
+              name = "check";
+              text = forEachDir ''
+                echo "checking ''${dir}"
+                nix flake check --all-systems --no-build
+              '';
+            };
+
+            dvt = final.writeShellApplication {
+              name = "dvt";
+              text = ''
+                if [ -z $1 ]; then
+                  echo "no template specified"
+                  exit 1
+                fi
+
+                TEMPLATE=$1
+
+                nix \
+                  --experimental-features 'nix-command flakes' \
+                  flake init \
+                  --template \
+                  "github:the-nix-way/dev-templates#''${TEMPLATE}"
+              '';
+            };
+
+            update = final.writeShellApplication {
+              name = "update";
+              text = forEachDir ''
+                echo "updating ''${dir}"
+                nix flake update
+              '';
+            };
           })
       ];
       supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
@@ -47,7 +82,7 @@
     {
       devShells = forEachSupportedSystem ({ pkgs }: {
         default = pkgs.mkShell {
-          packages = with pkgs; [ format update ];
+          packages = with pkgs; [ build check format update ];
         };
       });
 
@@ -61,6 +96,11 @@
 
     {
       templates = rec {
+        c-cpp = {
+          path = ./c-cpp;
+          description = "C/C++ development environment";
+        };
+
         clojure = {
           path = ./clojure;
           description = "Clojure development environment";
@@ -91,6 +131,11 @@
           description = "Elm development environment";
         };
 
+        empty = {
+          path = ./empty;
+          description = "Empty dev template that you can customize at will";
+        };
+
         gleam = {
           path = ./gleam;
           description = "Gleam development environment";
@@ -146,6 +191,11 @@
           description = "Node.js development environment";
         };
 
+        ocaml = {
+          path = ./ocaml;
+          description = "OCaml development environment";
+        };
+
         opa = {
           path = ./opa;
           description = "Open Policy Agent development environment";
@@ -176,6 +226,11 @@
           description = "Python development environment";
         };
 
+        r = {
+          path = ./r;
+          description = "R development environment";
+        };
+
         ruby = {
           path = ./ruby;
           description = "Ruby development environment";
@@ -201,6 +256,11 @@
           description = "Shell script development environment";
         };
 
+        vlang = {
+          path = ./vlang;
+          description = "Vlang developent environment";
+        };
+
         zig = {
           path = ./zig;
           description = "Zig development environment";
@@ -208,6 +268,8 @@
 
         # Aliases
         rt = rust-toolchain;
+        c = c-cpp;
+        cpp = c-cpp;
       };
     };
 }
diff --git a/gleam/flake.lock b/gleam/flake.lock
index d4ecad3..1cbfc64 100644
--- a/gleam/flake.lock
+++ b/gleam/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/go/flake.lock b/go/flake.lock
index d4ecad3..1cbfc64 100644
--- a/go/flake.lock
+++ b/go/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/go/flake.nix b/go/flake.nix
index c5b652d..34b98f6 100644
--- a/go/flake.nix
+++ b/go/flake.nix
@@ -1,11 +1,11 @@
 {
-  description = "A Nix-flake-based Go 1.17 development environment";
+  description = "A Nix-flake-based Go 1.22 development environment";
 
   inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
 
   outputs = { self, nixpkgs }:
     let
-      goVersion = 20; # Change this to update the whole stack
+      goVersion = 22; # Change this to update the whole stack
       overlays = [ (final: prev: { go = prev."go_1_${toString goVersion}"; }) ];
       supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
       forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
@@ -16,7 +16,7 @@
       devShells = forEachSupportedSystem ({ pkgs }: {
         default = pkgs.mkShell {
           packages = with pkgs; [
-            # go 1.20 (specified by overlay)
+            # go (version is specified by overlay)
             go
 
             # goimports, godoc, etc.
diff --git a/hashi/flake.lock b/hashi/flake.lock
index d4ecad3..1cbfc64 100644
--- a/hashi/flake.lock
+++ b/hashi/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/haskell/flake.lock b/haskell/flake.lock
index d4ecad3..1cbfc64 100644
--- a/haskell/flake.lock
+++ b/haskell/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/haxe/flake.lock b/haxe/flake.lock
index 2effb16..1cbfc64 100644
--- a/haxe/flake.lock
+++ b/haxe/flake.lock
@@ -2,18 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1697009197,
-        "narHash": "sha256-viVRhBTFT8fPJTb1N3brQIpFZnttmwo3JVKNuWRVc3s=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "01441e14af5e29c9d27ace398e6dd0b293e25a54",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
diff --git a/haxe/flake.nix b/haxe/flake.nix
index 6c2c0ea..636f64e 100644
--- a/haxe/flake.nix
+++ b/haxe/flake.nix
@@ -1,7 +1,7 @@
 {
   description = "A Nix-flake-based Haxe development environment";
 
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
 
   outputs =
     { self
diff --git a/java/flake.lock b/java/flake.lock
index d4ecad3..1cbfc64 100644
--- a/java/flake.lock
+++ b/java/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/java/flake.nix b/java/flake.nix
index 42b6255..d72cc26 100644
--- a/java/flake.nix
+++ b/java/flake.nix
@@ -21,7 +21,7 @@
     {
       devShells = forEachSupportedSystem ({ pkgs }: {
         default = pkgs.mkShell {
-          packages = with pkgs; [ gradle jdk maven ];
+          packages = with pkgs; [ gradle jdk maven jdt-language-server ];
         };
       });
     };
diff --git a/kotlin/flake.lock b/kotlin/flake.lock
index d4ecad3..1cbfc64 100644
--- a/kotlin/flake.lock
+++ b/kotlin/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/latex/flake.lock b/latex/flake.lock
index d4ecad3..1cbfc64 100644
--- a/latex/flake.lock
+++ b/latex/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/nickel/flake.lock b/nickel/flake.lock
index d4ecad3..1cbfc64 100644
--- a/nickel/flake.lock
+++ b/nickel/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/nim/flake.lock b/nim/flake.lock
index d4ecad3..1cbfc64 100644
--- a/nim/flake.lock
+++ b/nim/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/nix/flake.lock b/nix/flake.lock
index d4ecad3..1cbfc64 100644
--- a/nix/flake.lock
+++ b/nix/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/nix/flake.nix b/nix/flake.nix
index 74bc720..a2a6d75 100644
--- a/nix/flake.nix
+++ b/nix/flake.nix
@@ -17,11 +17,10 @@
             cachix
             lorri
             niv
-            nixfmt
+            nixfmt-classic
             statix
             vulnix
             haskellPackages.dhall-nix
-            rnix-lsp
           ];
         };
       });
diff --git a/node/flake.lock b/node/flake.lock
index d4ecad3..1cbfc64 100644
--- a/node/flake.lock
+++ b/node/flake.lock
@@ -2,12 +2,12 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1703013332,
-        "narHash": "sha256-+tFNwMvlXLbJZXiMHqYq77z/RfmpfpiI3yjL6o/Zo9M=",
-        "rev": "54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6",
-        "revCount": 561409,
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.561409%2Brev-54aac082a4d9bb5bbc5c4e899603abfb76a3f6d6/018c8732-ea5c-725f-a6c9-9ed48683aa5a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
         "type": "tarball",
diff --git a/ocaml/flake.lock b/ocaml/flake.lock
index 0f56f8b..1cbfc64 100644
--- a/ocaml/flake.lock
+++ b/ocaml/flake.lock
@@ -2,18 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
diff --git a/opa/flake.lock b/opa/flake.lock
index 0f56f8b..1cbfc64 100644
--- a/opa/flake.lock
+++ b/opa/flake.lock
@@ -2,18 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
diff --git a/php/flake.lock b/php/flake.lock
index 0f56f8b..1cbfc64 100644
--- a/php/flake.lock
+++ b/php/flake.lock
@@ -2,18 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
diff --git a/protobuf/flake.lock b/protobuf/flake.lock
index 0f56f8b..1cbfc64 100644
--- a/protobuf/flake.lock
+++ b/protobuf/flake.lock
@@ -2,18 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
diff --git a/pulumi/flake.lock b/pulumi/flake.lock
index 0f56f8b..1cbfc64 100644
--- a/pulumi/flake.lock
+++ b/pulumi/flake.lock
@@ -2,18 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
diff --git a/pulumi/flake.nix b/pulumi/flake.nix
index aac4e92..6c0509c 100644
--- a/pulumi/flake.nix
+++ b/pulumi/flake.nix
@@ -25,7 +25,7 @@
             python311
 
             # Go SDK
-            go_1_20
+            go_1_22
 
             # Node.js SDK
             nodejs
diff --git a/purescript/flake.lock b/purescript/flake.lock
index 4e78d08..3bbb0b2 100644
--- a/purescript/flake.lock
+++ b/purescript/flake.lock
@@ -3,11 +3,11 @@
     "easy-purescript-nix": {
       "flake": false,
       "locked": {
-        "lastModified": 1686900973,
-        "narHash": "sha256-9whTjp8BYy8ZzyghhgbawS06/dVESduME3wsdNH/mpk=",
+        "lastModified": 1710161569,
+        "narHash": "sha256-lcIRIOFCdIWEGyKyG/tB4KvxM9zoWuBRDxW+T+mvIb0=",
         "owner": "justinwoo",
         "repo": "easy-purescript-nix",
-        "rev": "8cf400656945b2f2bacfd6a8775792aa701f60e9",
+        "rev": "117fd96acb69d7d1727df95b6fde9d8715e031fc",
         "type": "github"
       },
       "original": {
@@ -18,18 +18,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
diff --git a/python/flake.lock b/python/flake.lock
index 0f56f8b..1cbfc64 100644
--- a/python/flake.lock
+++ b/python/flake.lock
@@ -2,18 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
diff --git a/python/flake.nix b/python/flake.nix
index 6cb2695..c995e07 100644
--- a/python/flake.nix
+++ b/python/flake.nix
@@ -13,8 +13,12 @@
     {
       devShells = forEachSupportedSystem ({ pkgs }: {
         default = pkgs.mkShell {
-          packages = with pkgs; [ python311 virtualenv ] ++
-            (with pkgs.python311Packages; [ pip ]);
+          venvDir = ".venv";
+          packages = with pkgs; [ python311 ] ++
+            (with pkgs.python311Packages; [ 
+              pip
+              venvShellHook 
+            ]);
         };
       });
     };
diff --git a/r/.envrc b/r/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/r/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/r/flake.lock b/r/flake.lock
new file mode 100644
index 0000000..0f56f8b
--- /dev/null
+++ b/r/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1689261696,
+        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/r/flake.nix b/r/flake.nix
new file mode 100644
index 0000000..da334ef
--- /dev/null
+++ b/r/flake.nix
@@ -0,0 +1,31 @@
+{
+  description = "A Nix-flake-based R development environment";
+
+  inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
+
+  outputs = { self, nixpkgs }:
+    let
+      overlays = [
+        (final: prev: rec {
+          rEnv = prev.rWrapper.override {
+            packages = with prev.rPackages; [ knitr ];
+          };
+        })
+      ];
+      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
+      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
+        pkgs = import nixpkgs { inherit overlays system; };
+      });
+    in
+    {
+      devShells = forEachSupportedSystem ({ pkgs }: {
+        default = pkgs.mkShell {
+          packages = with pkgs;
+            [ rEnv
+              pandoc
+              texlive.combined.scheme-full
+            ];
+        };
+      });
+    };
+}
diff --git a/ruby/flake.lock b/ruby/flake.lock
index 0f56f8b..1cbfc64 100644
--- a/ruby/flake.lock
+++ b/ruby/flake.lock
@@ -2,18 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
diff --git a/rust-toolchain/flake.lock b/rust-toolchain/flake.lock
index 740a900..0a59404 100644
--- a/rust-toolchain/flake.lock
+++ b/rust-toolchain/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1681202837,
-        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "lastModified": 1705309234,
+        "narHash": "sha256-uNRRNRKmJyCRC/8y1RqBkqWBLM034y4qN7EprSdmgyA=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "rev": "1ef2e671c3b0c19053962c07dbda38332dcebf26",
         "type": "github"
       },
       "original": {
@@ -20,34 +20,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1681358109,
-        "narHash": "sha256-eKyxW4OohHQx9Urxi7TQlFBTDWII+F+x2hklDOQPB50=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "96ba1c52e54e74c3197f4d43026b3f3d92e83ff9",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
@@ -59,14 +41,16 @@
     "rust-overlay": {
       "inputs": {
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": [
+          "nixpkgs"
+        ]
       },
       "locked": {
-        "lastModified": 1689302058,
-        "narHash": "sha256-yD74lcHTrw4niXcE9goJLbzsgyce48rQQoy5jK5ZK40=",
+        "lastModified": 1713150335,
+        "narHash": "sha256-Ic7zCPfiSYc9nFFp+E44WFk3TBJ99J/uPZ4QXX+uPPw=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "7b8dbbf4c67ed05a9bf3d9e658c12d4108bc24c8",
+        "rev": "b186d85e747e2b7bee220ec95839fb66c868dc47",
         "type": "github"
       },
       "original": {
diff --git a/rust/flake.lock b/rust/flake.lock
index 740a900..0a59404 100644
--- a/rust/flake.lock
+++ b/rust/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1681202837,
-        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "lastModified": 1705309234,
+        "narHash": "sha256-uNRRNRKmJyCRC/8y1RqBkqWBLM034y4qN7EprSdmgyA=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "rev": "1ef2e671c3b0c19053962c07dbda38332dcebf26",
         "type": "github"
       },
       "original": {
@@ -20,34 +20,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1681358109,
-        "narHash": "sha256-eKyxW4OohHQx9Urxi7TQlFBTDWII+F+x2hklDOQPB50=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "96ba1c52e54e74c3197f4d43026b3f3d92e83ff9",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
@@ -59,14 +41,16 @@
     "rust-overlay": {
       "inputs": {
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": [
+          "nixpkgs"
+        ]
       },
       "locked": {
-        "lastModified": 1689302058,
-        "narHash": "sha256-yD74lcHTrw4niXcE9goJLbzsgyce48rQQoy5jK5ZK40=",
+        "lastModified": 1713150335,
+        "narHash": "sha256-Ic7zCPfiSYc9nFFp+E44WFk3TBJ99J/uPZ4QXX+uPPw=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "7b8dbbf4c67ed05a9bf3d9e658c12d4108bc24c8",
+        "rev": "b186d85e747e2b7bee220ec95839fb66c868dc47",
         "type": "github"
       },
       "original": {
diff --git a/scala/flake.lock b/scala/flake.lock
index 0f56f8b..1cbfc64 100644
--- a/scala/flake.lock
+++ b/scala/flake.lock
@@ -2,18 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
diff --git a/shell/flake.lock b/shell/flake.lock
index 0f56f8b..1cbfc64 100644
--- a/shell/flake.lock
+++ b/shell/flake.lock
@@ -2,18 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {
diff --git a/vlang/.envrc b/vlang/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/vlang/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/vlang/flake.lock b/vlang/flake.lock
new file mode 100644
index 0000000..1cbfc64
--- /dev/null
+++ b/vlang/flake.lock
@@ -0,0 +1,25 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/vlang/flake.nix b/vlang/flake.nix
new file mode 100644
index 0000000..134872b
--- /dev/null
+++ b/vlang/flake.nix
@@ -0,0 +1,22 @@
+{
+  description = "A Nix-flake-based Vlang development environment";
+
+  inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
+
+  outputs = { self, nixpkgs }:
+    let
+      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
+      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
+        pkgs = import nixpkgs { inherit system; };
+      });
+    in
+    {
+      devShells = forEachSupportedSystem ({ pkgs }: {
+        default = pkgs.mkShell {
+          packages = with pkgs; [
+            vlang
+          ];
+        };
+      });
+    };
+}
diff --git a/zig/flake.lock b/zig/flake.lock
index 0f56f8b..1cbfc64 100644
--- a/zig/flake.lock
+++ b/zig/flake.lock
@@ -2,18 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689261696,
-        "narHash": "sha256-LzfUtFs9MQRvIoQ3MfgSuipBVMXslMPH/vZ+nM40LkA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "df1eee2aa65052a18121ed4971081576b25d6b5c",
-        "type": "github"
+        "lastModified": 1712963716,
+        "narHash": "sha256-WKm9CvgCldeIVvRz87iOMi8CFVB1apJlkUT4GGvA0iM=",
+        "rev": "cfd6b5fc90b15709b780a5a1619695a88505a176",
+        "revCount": 611350,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.611350%2Brev-cfd6b5fc90b15709b780a5a1619695a88505a176/018eddfc-e6d9-74bb-a823-20f2ae60079b/source.tar.gz"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
       }
     },
     "root": {