Merge pull request #7391 from nxy7/main

add: buildRocPackage lib output to nix flake

flake.nix

@@ -30,8 +30,10 @@
       supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-darwin" "aarch64-linux" ];
 
       templates = import ./nix/templates { };
-    in
-    { inherit templates; } //
+      lib = { buildRocPackage = import ./nix/buildRocPackage.nix; };
+    in {
+      inherit templates lib;
+    } //
     flake-utils.lib.eachSystem supportedSystems (system:
       let
 
@@ -47,7 +49,7 @@
 
         # DevInputs are not necessary to build roc as a user
         linuxDevInputs = with pkgs;
-          lib.optionals stdenv.isLinux [
+          pkgs.lib.optionals stdenv.isLinux [
             valgrind # used in cli tests, see cli/tests/cli_tests.rs
             vulkan-headers # here and below is all graphics stuff for examples/gui
             vulkan-loader
@@ -59,12 +61,12 @@
             xorg.libXi
             xorg.libxcb
             cargo-llvm-cov # to visualize code coverage
-            
+
           ];
 
         # DevInputs are not necessary to build roc as a user
         darwinDevInputs = with pkgs;
-          lib.optionals stdenv.isDarwin
+          pkgs.lib.optionals stdenv.isDarwin
             (with pkgs.darwin.apple_sdk.frameworks; [
               CoreVideo # for examples/gui
               Metal # for examples/gui
@@ -135,10 +137,10 @@
           NIX_GLIBC_PATH =
             if pkgs.stdenv.isLinux then "${pkgs.glibc.out}/lib" else "";
 
-          LD_LIBRARY_PATH = with pkgs;
-            lib.makeLibraryPath
-              ([ pkg-config stdenv.cc.cc.lib libffi ncurses zlib ]
-              ++ linuxDevInputs);
+          LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath
+            ([ pkgs.pkg-config pkgs.stdenv.cc.cc.lib pkgs.libffi pkgs.ncurses pkgs.zlib ]
+            ++ linuxDevInputs);
+
           NIXPKGS_ALLOW_UNFREE =
             1; # to run the GUI examples with NVIDIA's closed source drivers
 

nix/buildRocPackage.nix

@@ -0,0 +1,41 @@
+{ pkgs, roc-cli, name, entryPoint, src, outputHash, linker ? "", ... }:
+let
+  packageDependencies = pkgs.stdenv.mkDerivation {
+    inherit src;
+    name = "roc-dependencies";
+    nativeBuildInputs = with pkgs; [ gnutar brotli ripgrep wget cacert ];
+
+    buildPhase = ''
+      list=$(rg -o 'https://github.com[^"]*' ${entryPoint})
+      for url in $list; do
+        path=$(echo $url | awk -F'github.com/|/[^/]*$' '{print $2}')
+        packagePath=$out/roc/packages/github.com/$path
+        mkdir -p $packagePath
+        wget -P $packagePath $url
+        cd $packagePath
+        brotli -d *.tar.br
+        tar -xf *.tar --one-top-level
+        rm *.tar.br
+        rm *.tar
+      done
+    '';
+
+    outputHashMode = "recursive";
+    outputHashAlgo = "sha256";
+    outputHash = outputHash;
+  };
+in pkgs.stdenv.mkDerivation {
+  inherit name src;
+  nativeBuildInputs = [ roc-cli ];
+  XDG_CACHE_HOME = packageDependencies;
+
+  buildPhase = ''
+    roc build ${entryPoint} --output ${name} --optimize ${
+      if linker != "" then "--linker=${linker}" else ""
+    }
+
+    mkdir -p $out/bin
+    mv ${name} $out/bin/${name}
+  '';
+}
+