Merge pull request #67510 from Infinisil/crystal-infra

Crystal package builder

pkgs/development/compilers/crystal/build-package.nix

@@ -0,0 +1,53 @@
+{ stdenv, lib, crystal, linkFarm, fetchFromGitHub }:
+{ # Generate shards.nix with `nix-shell -p crystal2nix --run crystal2nix` in the projects root
+  shardsFile ? null
+  # Specify binaries to build in the form { foo.src = "src/foo.cr"; }
+  # The default `crystal build` options can be overridden with { foo.options = [ "--no-debug" ]; }
+, crystalBinaries ? {}
+, ...
+}@args:
+let
+  mkDerivationArgs = builtins.removeAttrs args [ "shardsFile" "crystalBinaries" ];
+
+  crystalLib = linkFarm "crystal-lib" (lib.mapAttrsToList (name: value: {
+    inherit name;
+    path = fetchFromGitHub value;
+  }) (import shardsFile));
+
+  defaultOptions = [ "--release" "--progress" "--no-debug" "--verbose" ];
+
+in stdenv.mkDerivation (mkDerivationArgs // {
+
+  configurePhase = args.configurePhase or ''
+    runHook preConfigure
+    ${lib.optionalString (shardsFile != null) "ln -s ${crystalLib} lib"}
+    runHook postConfigure
+  '';
+
+  buildInputs = args.buildInputs or [] ++ [ crystal ];
+
+  buildPhase = args.buildPhase or ''
+    runHook preBuild
+    ${lib.concatStringsSep "\n" (lib.mapAttrsToList (bin: attrs: ''
+      crystal ${lib.escapeShellArgs ([
+        "build"
+        "-o" bin
+        (attrs.src or (throw "No source file for crystal binary ${bin} provided"))
+      ] ++ attrs.options or defaultOptions)}
+    '') crystalBinaries)}
+    runHook postBuild
+  '';
+
+  installPhase = args.installPhase or ''
+    runHook preInstall
+    mkdir -p "$out/bin"
+    ${lib.concatMapStringsSep "\n" (bin: ''
+      mv ${lib.escapeShellArgs [ bin "${placeholder "out"}/bin/${bin}" ]}
+    '') (lib.attrNames crystalBinaries)}
+    runHook postInstall
+  '';
+
+  meta = args.meta or {} // {
+    platforms = args.meta.platforms or crystal.meta.platforms;
+  };
+})

pkgs/development/compilers/crystal/crystal2nix.cr

@@ -26,7 +26,7 @@ File.open "shards.nix", "w+" do |file|
 
     sha256 = ""
     args = ["--url", url, "--rev", rev]
-    Process.run("nix-prefetch-git", args: args) do |x|
+    Process.run("@nixPrefetchGit@", args: args) do |x|
       x.error.each_line { |e| puts e }
       sha256 = PrefetchJSON.from_json(x.output).sha256
     end

pkgs/development/compilers/crystal/crystal2nix.nix

@@ -0,0 +1,16 @@
+{ lib, crystal, nix-prefetch-git }:
+crystal.buildCrystalPackage {
+  pname = "crystal2nix";
+  version = "unstable-2018-07-31";
+
+  nixPrefetchGit = "${lib.getBin nix-prefetch-git}/bin/nix-prefetch-git";
+  unpackPhase = "substituteAll ${./crystal2nix.cr} crystal2nix.cr";
+
+  crystalBinaries.crystal2nix.src = "crystal2nix.cr";
+
+  meta = with lib; {
+    description = "Utility to convert Crystal's shard.lock files to a Nix file";
+    license = licenses.mit;
+    maintainers = [ maintainers.manveru ];
+  };
+}

pkgs/development/compilers/crystal/default.nix

@@ -1,6 +1,7 @@
 { stdenv, lib, fetchFromGitHub, fetchurl, makeWrapper
-, coreutils, git, gmp, nettools, openssl, readline, tzdata, libxml2, libyaml
-, boehmgc, libatomic_ops, pcre, libevent, libiconv, llvm, clang, which, zlib }:
+, coreutils, git, gmp, nettools, openssl_1_0_2, readline, tzdata, libxml2, libyaml
+, boehmgc, libatomic_ops, pcre, libevent, libiconv, llvm, clang, which, zlib
+, callPackage }:
 
 # We need multiple binaries as a given binary isn't always able to build
 # (even slightly) older or newer versions.
@@ -19,7 +20,7 @@ let
 
   arch = archs."${stdenv.system}" or (throw "system ${stdenv.system} not supported");
 
-  checkInputs = [ git gmp openssl readline libxml2 libyaml ];
+  checkInputs = [ git gmp openssl_1_0_2 readline libxml2 libyaml ];
 
   genericBinary = { version, sha256s, rel ? 1 }:
   stdenv.mkDerivation rec {
@@ -37,7 +38,7 @@ let
   };
 
   generic = { version, sha256, binary, doCheck ? true }:
-  stdenv.mkDerivation rec {
+  let compiler = stdenv.mkDerivation rec {
     pname = "crystal";
     inherit doCheck version;
 
@@ -72,7 +73,7 @@ let
 
     buildInputs = [
       boehmgc libatomic_ops pcre libevent libyaml
-      llvm zlib openssl
+      llvm zlib openssl_1_0_2
     ] ++ stdenv.lib.optionals stdenv.isDarwin [
       libiconv
     ];
@@ -134,6 +135,10 @@ let
       export PATH=${lib.makeBinPath checkInputs}:$PATH
     '';
 
+    passthru.buildCrystalPackage = callPackage ./build-package.nix {
+      crystal = compiler;
+    };
+
     meta = with lib; {
       description = "A compiled language with Ruby like syntax and type inference";
       homepage = https://crystal-lang.org/;
@@ -141,7 +146,7 @@ let
       maintainers = with maintainers; [ manveru david50407 peterhoeg ];
       platforms = builtins.attrNames archs;
     };
-  };
+  }; in compiler;
 
 in rec {
   binaryCrystal_0_26 = genericBinary {
@@ -207,4 +212,6 @@ in rec {
   };
 
   crystal = crystal_0_30;
+
+  crystal2nix = callPackage ./crystal2nix.nix {};
 }

pkgs/development/compilers/mint/default.nix

@@ -1,40 +1,7 @@
-# Updating the dependencies for this package:
-#
-#   wget https://raw.githubusercontent.com/mint-lang/mint/0.3.1/shard.lock
-#   nix-shell -p crystal libyaml --run 'crystal run crystal2nix.cr'
-#
-{stdenv, lib, fetchFromGitHub, crystal, zlib, openssl, duktape, which, libyaml }:
-let
-  crystalPackages = lib.mapAttrs (name: src:
-    stdenv.mkDerivation {
-      name = lib.replaceStrings ["/"] ["-"] name;
-      src = fetchFromGitHub src;
-      phases = "installPhase";
-      installPhase = ''cp -r $src $out'';
-      passthru = { libName = name; };
-    }
-  ) (import ./shards.nix);
-
-  crystalLib = stdenv.mkDerivation {
-    name = "crystal-lib";
-    src = lib.attrValues crystalPackages;
-    libNames = lib.mapAttrsToList (k: v: [k v]) crystalPackages;
-    phases = "buildPhase";
-    buildPhase = ''
-      mkdir -p $out
-      linkup () {
-        while [ "$#" -gt 0 ]; do
-          ln -s $2 $out/$1
-          shift; shift
-        done
-      }
-      linkup $libNames
-    '';
-  };
-in
-stdenv.mkDerivation rec {
+{ lib, fetchFromGitHub, crystal, zlib, openssl_1_0_2, duktape, which, libyaml }:
+crystal.buildCrystalPackage rec {
   version = "0.5.0";
-  name = "mint-${version}";
+  pname = "mint";
   src = fetchFromGitHub {
     owner = "mint-lang";
     repo = "mint";
@@ -42,23 +9,19 @@ stdenv.mkDerivation rec {
     sha256 = "0vxbx38c390rd2ysvbwgh89v2232sh5rbsp3nk9wzb70jybpslvl";
   };
 
-  nativeBuildInputs = [ which crystal zlib openssl duktape libyaml ];
+  buildInputs = [ openssl_1_0_2 ];
 
-  buildPhase = ''
-    mkdir -p $out/bin tmp
-    cd tmp
-    ln -s ${crystalLib} lib
-    cp -r $src/* .
-    crystal build src/mint.cr -o $out/bin/mint --verbose --progress --release --no-debug
-  '';
-
-  installPhase = ''true'';
+  # Update with
+  #   nix-shell -p crystal2nix --run crystal2nix
+  # with mint's shard.lock file in the current directory
+  shardsFile = ./shards.nix;
+  crystalBinaries.mint.src = "src/mint.cr";
 
   meta = {
     description = "A refreshing language for the front-end web";
     homepage = https://mint-lang.com/;
-    license = stdenv.lib.licenses.bsd3;
-    maintainers = with stdenv.lib.maintainers; [ manveru ];
+    license = lib.licenses.bsd3;
+    maintainers = with lib.maintainers; [ manveru ];
     platforms = [ "x86_64-linux" "i686-linux" "x86_64-darwin" ];
   };
 }