Merge pull request #122 from mlabs-haskell/jared/114-leftovers-haskel…

…l-dev-shell

Adding `devShells` to play with generated schema code for Haskell's Prelude and Plutus Prelude

libs/build.nix

@@ -1,6 +1,6 @@
 # Foundational .lbf packages
 # TODO(bladyjoker): Make packages that actually try and compile.
-_:
+{ inputs, ... }:
 {
  perSystem = { pkgs, config, ... }: {
 
@@ -41,7 +41,13 @@ _:
  imports = [ ./lbf-prelude ];
  files = [ "Plutus/V1.lbf" "Plutus/V2.lbf" ];
  classes = [ "Prelude.Eq" "Prelude.Json" "Plutus.V1.PlutusData" ];
- dependencies = [ "lbf-prelude" ];
+ dependencies =
+ [
+ "lbf-prelude"
+ # TODO(jaredponn): Investigate why `lbr-plutus` is _not_
+ # being automatically included as a dependency.
+ "lbr-plutus"
+ ];
  configs = [ ../lambda-buffers-codegen/data/haskell-prelude-base.json ../lambda-buffers-codegen/data/haskell-plutus-plutustx.json ];
  };
 
@@ -57,6 +63,149 @@ _:
 
  };
 
+ # The following devShells allow one to conveniently play with some of the
+ # above schemas
+ devShells = {
+ dev-prelude-haskell =
+ # Note:
+ # `lbf-prelude-haskell` (defined above
+ # `packages.lbf-prelude-haskell`) essentially generates a cabal
+ # project from the `./Prelude.lbf` schema; and the following uses
+ # `haskell.nix` to convert the `.cabal` project into a dev shell.
+ # This is a dev shell which provides
+ # - ghc with `lbf-prelude-haskell` package (and its dependencies)
+ # - the CLI application (`lbf-prelude-to-haskell`) to compile `.lbf`
+ # schemas
+ let
+ project = { lib, ... }: {
+ src = config.packages.lbf-prelude-haskell;
+
+ name = "lbf-prelude-haskell";
+
+ inherit (config.settings.haskell) index-state compiler-nix-name;
+
+ extraHackage = [
+ "${config.packages.lbr-prelude-haskell-src}"
+ "${config.packages.lbf-prelude-haskell}"
+ ];
+
+ modules = [
+ (_: {
+ packages = {
+ allComponent.doHoogle = true;
+ allComponent.doHaddock = true;
+
+ # Enable strict compilation
+ lbf-prelude.configureFlags = [ "-f-dev" ];
+ };
+ })
+ ];
+
+ shell = {
+
+ withHoogle = true;
+
+ exactDeps = true;
+
+ nativeBuildInputs = config.settings.shell.tools
+ ++ [ config.packages.lbf-prelude-to-haskell ];
+
+ # Note: the `additional` (contrast to `packages`) attribute
+ # includes the dependencies + the package itself. See:
+ # https://input-output-hk.github.io/haskell.nix/reference/library.html#shellfor
+ # This *must* be the name of the autogenerated cabal package from
+ # `lbf-prelude-haskell`
+ additional = ps: [ ps.lbf-prelude ];
+
+ tools = {
+ cabal = { };
+ haskell-language-server = { };
+ };
+
+ shellHook = lib.mkForce config.settings.shell.hook;
+ };
+ };
+ hsNixFlake = (pkgs.haskell-nix.cabalProject' [
+ inputs.mlabs-tooling.lib.mkHackageMod
+ inputs.mlabs-tooling.lib.moduleMod
+ project
+ ]).flake { };
+ in
+ hsNixFlake.devShell;
+
+ dev-plutustx =
+ # Note:
+ # Similarly to `dev-prelude-haskell`, `packages.lbf-plutus-haskell`
+ # essentially generates a cabal project from the `*.lbf` schemas; and
+ # the following uses `haskell.nix` to convert the `.cabal` project into
+ # a dev shell.
+ # This is a dev shell which provides
+ # - ghc with `lbf-plutus-haskell` package (and its dependencies)
+ # - the CLI application (`lbf-plutus-to-haskell`) to compile `.lbf`
+ # schemas.
+ #
+ # Note:
+ # This is mostly duplicated code from `dev-prelude-haskell`
+ let
+ project = { lib, ... }: {
+ src = config.packages.lbf-plutus-haskell;
+
+ name = "lbf-plutus-haskell";
+
+ inherit (config.settings.haskell) index-state compiler-nix-name;
+
+ extraHackage = [
+ "${config.packages.lbr-prelude-haskell-src}"
+ "${config.packages.lbf-prelude-haskell}"
+ "${config.packages.lbr-plutus-haskell-src}"
+ "${config.packages.lbf-plutus-haskell}"
+ ];
+
+ modules = [
+ (_: {
+ packages = {
+ allComponent.doHoogle = true;
+ allComponent.doHaddock = true;
+
+ # Enable strict compilation
+ lbf-plutus.configureFlags = [ "-f-dev" ];
+ };
+ })
+ ];
+
+ shell = {
+
+ withHoogle = true;
+
+ exactDeps = true;
+
+ nativeBuildInputs = config.settings.shell.tools
+ ++ [
+ # We include both the Prelude and Plutus
+ # frontend. Perhaps, we should _only_ include the
+ # Plutus frontend, but it doesn't hurt to include both.
+ config.packages.lbf-prelude-to-haskell
+ config.packages.lbf-plutus-to-haskell
+ ];
+
+ additional = ps: [ ps.lbf-plutus ];
+
+ tools = {
+ cabal = { };
+ haskell-language-server = { };
+ };
+
+ shellHook = lib.mkForce config.settings.shell.hook;
+ };
+ };
+ hsNixFlake = (pkgs.haskell-nix.cabalProject' [
+ inputs.mlabs-tooling.lib.mkHackageMod
+ inputs.mlabs-tooling.lib.moduleMod
+ project
+ ]).flake { };
+ in
+ hsNixFlake.devShell;
+ };
  };
 }