feat: better support for old glibc

Signed-off-by: Yaroslav Bolyukin <[email protected]>

flake.nix

@@ -1,10 +1,10 @@
 {
   description = "VIVE Pro 2 support for linux";
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/1316edc465ed7b2d650ba8be6a1a0b129926bd81";
+    nixpkgs.url = "github:dguibert/nixpkgs/dg/fix-replacestdenv-coreutils";
     flake-utils.url = "github:numtide/flake-utils";
     rust-overlay = {
-      url = "github:oxalica/rust-overlay/f7d4a3aabee883bfa4d8987a19446ca8f25df81f";
+      url = "github:oxalica/rust-overlay";
       inputs = {
         nixpkgs.follows = "nixpkgs";
         flake-utils.follows = "flake-utils";
@@ -23,7 +23,8 @@
         pkgs = import nixpkgs {
           inherit system;
           overlays = [
-            rust-overlay.overlay
+            rust-overlay.overlays.default
+            (import ./nix/oldGlibc.nix)
             (final: prev:
               let
                 rust = (final.buildPackages.rustChannelOf {
@@ -46,8 +47,9 @@
         };
         pkgs-mingw = import nixpkgs {
           inherit system;
+          config.replaceStdenv = import ./nix/oldGlibcStdenv.nix;
           overlays = [
-            rust-overlay.overlay
+            rust-overlay.overlays.default
             (final: prev: {
               # inherit rustPlatform;
               # https://github.com/NixOS/nixpkgs/issues/149593

nix/oldGlibc.nix

@@ -0,0 +1,21 @@
+let nixpkgs-old = builtins.fetchTarball {
+  name = "release-18.09";
+  url = "https://github.com/nixos/nixpkgs/archive/925ff360bc33876fdb6ff967470e34ff375ce65e.tar.gz";
+  sha256 = "1qbmp6x01ika4kdc7bhqawasnpmhyl857ldz25nmq9fsmqm1vl2s";
+};
+in
+self: super:
+let
+  oldPkgs = import nixpkgs-old { system = super.system; };
+in
+rec {
+  glibc = oldPkgs.glibc // { pname = "glibc"; };
+  glibcLocales = oldPkgs.glibcLocales;
+  glibcIconv = oldPkgs.glibcIconv;
+  stdenv = super.stdenv // {
+    overrides = self2: super2: super.stdenv.overrides self2 super2 // {
+      glibc = glibc;
+      linuxHeaders = glibc.linuxHeaders;
+    };
+  };
+}