initial commit

.gitignore

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+gf-book-examples
+book.pdf
+.direnv/
+.envrc

flake.lock

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+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1659446231,
+        "narHash": "sha256-hekabNdTdgR/iLsgce5TGWmfIDZ86qjPhxDg/8TlzhE=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "eabc38219184cc3e04a974fe31857d8e0eac098d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-21.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "A very basic flake";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-21.11";
+  };
+
+  outputs =
+    { self, nixpkgs }:
+    let
+      system = "x86_64-linux";
+      pkgs = nixpkgs.legacyPackages.${system};
+
+      gf-rgl = pkgs.callPackage ./gf-rgl.nix { };
+
+      vim-gf = pkgs.vimUtils.buildVimPlugin {
+        name = "vim-gf";
+        src = pkgs.fetchFromGitHub {
+          owner = "gdetrez";
+          repo = "vim-gf";
+          rev = "60924ef93a0ec69dc716982646bc907dfb37de6d";
+          hash = "sha256-Y1xDsefjusJFJCQu6fX6x/QEECjRuVBC4l6kASJwUgU=";
+        };
+      };
+
+      gf-book-examples = pkgs.fetchzip {
+        url = "https://www.grammaticalframework.org/gf-book/gf-book-examples.tgz";
+        hash = "sha256-tiOJ2Pep+1WkhD6rSbDfvPIZf1pty9h1lNvGGe3vAX8=";
+      };
+
+      gf-book = pkgs.fetchurl {
+        url = "https://listenmaa.fi/b/Aarne_Ranta-GF-book.pdf";
+        hash = "sha256-GeoyJKYcC8MtPFXBdQhEOwAjwH+tWbG/T66KNZO67Og=";
+      };
+
+      neovim-for-gf = pkgs.neovim.override {
+        configure = {
+          packages.myPlugins = {
+            start = [
+              vim-gf
+              pkgs.vimPlugins.vim-nix
+            ];
+          };
+          customRC = ''
+            set nocompatible
+            set expandtab shiftwidth=2 tabstop=2
+            set number
+
+            syntax on
+            filetype plugin indent on
+
+            colorscheme delek
+
+            set fileformat=unix
+            autocmd BufWritePre * if &ft != 'markdown' | %s/\s\+$//e | endif
+            set fixendofline
+          '';
+        };
+      };
+    in
+    {
+      packages.${system} = {
+        gf = pkgs.haskellPackages.gf;
+        inherit gf-rgl gf-book gf-book-examples neovim-for-gf;
+      };
+
+      devShells.${system}.default = pkgs.mkShell {
+        buildInputs = [
+          pkgs.haskellPackages.gf
+          gf-rgl
+          neovim-for-gf
+          (pkgs.writeShellScriptBin "gf-book" ''
+            ${pkgs.zathura}/bin/zathura ${gf-book}
+          '')
+        ];
+
+        shellHook = ''
+          alias vim='nvim'
+
+          mkdir -p gf-book-examples
+          cp -rn ${gf-book-examples}/. gf-book-examples/
+          chmod -R u+w gf-book-examples/
+        '';
+      };
+    };
+}

gf-rgl.nix

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+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  haskellPackages,
+  ghc,
+  makeWrapper,
+  glibcLocales,
+  # Optional: build only specific languages (comma-separated, e.g., "Eng,Swe,Ger")
+  languages ? null,
+  # Optional: build mode - "present", "alltenses", or "both"
+  mode ? "both",
+}:
+
+let
+  # Build the language flag if languages are specified
+  langFlag = if languages != null then "--langs=${languages}" else "";
+
+  # Build the mode flags
+  modeFlags =
+    if mode == "present" then
+      "present"
+    else if mode == "alltenses" then
+      "alltenses"
+    else
+      ""; # both is default
+in
+
+stdenv.mkDerivation rec {
+  pname = "gf-rgl";
+  version = "20250812";
+
+  src = fetchFromGitHub {
+    owner = "GrammaticalFramework";
+    repo = "gf-rgl";
+    rev = version;
+    hash = "sha256-rqN5MV/XxChXC+Vs4aLIhRtyPQZNk0LQZ2TCdbd6wUw=";
+  };
+
+  nativeBuildInputs = [
+    haskellPackages.gf
+    ghc
+    makeWrapper
+    glibcLocales
+  ];
+
+  # Disable parallel building as the GF build process isn't parallel-safe
+  enableParallelBuilding = false;
+
+  configurePhase = ''
+    runHook preConfigure
+
+    export LOCALE_ARCHIVE=${glibcLocales}/lib/locale/locale-archive
+    export LANG=C.UTF-8
+    export LC_ALL=C.UTF-8
+
+    # The RGL uses Setup.hs to build
+    # We need to point it to the gf executable
+    export GF=${haskellPackages.gf}/bin/gf
+
+    # Make sure GF can find its own libraries
+    export GF_LIB_PATH=${haskellPackages.gf}/share/gf
+
+    echo "Using GF: $GF"
+    echo "GF version: $($GF --version || echo 'unknown')"
+
+    runHook postConfigure
+  '';
+
+  buildPhase = ''
+    runHook preBuild
+
+    # Build using the Haskell setup script
+    # This compiles all the GF grammar files
+    echo "Building GF-RGL with options: ${modeFlags} ${langFlag}"
+
+    runghc Setup.hs build ${modeFlags} ${langFlag} --gf=${haskellPackages.gf}/bin/gf --verbose
+
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    # Install to the output directory
+    mkdir -p $out/share/gf
+
+    # Copy the compiled files
+    echo "Installing to $out/share/gf"
+    runghc Setup.hs copy ${modeFlags} --dest=$out/share/gf
+
+    # Create a setup hook so other derivations can find this
+    mkdir -p $out/nix-support
+    cat > $out/nix-support/setup-hook << EOF
+    export GF_LIB_PATH="\''${GF_LIB_PATH:+\''${GF_LIB_PATH}:}$out/share/gf"
+    EOF
+
+    runHook postInstall
+  '';
+
+  # The RGL is architecture-independent (it's just compiled grammar files)
+  # but we keep it architecture-specific for now to be safe
+  # preferLocalBuild = true;
+
+  meta = with lib; {
+    description = "Grammatical Framework's Resource Grammar Library (RGL)";
+    longDescription = ''
+      The GF Resource Grammar Library is the standard library for Grammatical
+      Framework. It covers the morphology and basic syntax of over 30 languages.
+
+      This package includes compiled grammar modules (.gfo files) that can be
+      imported and used in GF applications.
+
+      Supported languages include: English, Swedish, German, French, Spanish,
+      Italian, Dutch, Finnish, Russian, Bulgarian, Catalan, Danish, Norwegian,
+      Polish, Romanian, Afrikaans, Amharic, Arabic, Basque, Chinese, Estonian,
+      Greek, Hebrew, Hindi, Japanese, Korean, Latvian, Maltese, Mongolian,
+      Nepali, Persian, Punjabi, Sindhi, Somali, Thai, Turkish, Urdu, and more.
+    '';
+    homepage = "https://www.grammaticalframework.org/";
+    license = with licenses; [
+      lgpl3Plus
+      bsd3
+    ];
+    maintainers = with maintainers; [ ];
+    platforms = platforms.unix;
+    # Note: This may take a while to build (30+ minutes for all languages)
+    # Consider using binary caches or building with specific languages only
+  };
+}