Merge staging-next into staging

4 files changed, 124 insertions, 6 deletions

diff --git a/pkgs/development/compilers/crystal/build-package.nix b/pkgs/development/compilers/crystal/build-package.nix
new file mode 100644
index 00000000000..8ffa89a11b4
--- /dev/null
+++ b/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/${bin}" ]}
+    '') (lib.attrNames crystalBinaries)}
+    runHook postInstall
+  '';
+
+  meta = args.meta or {} // {
+    platforms = args.meta.platforms or crystal.meta.platforms;
+  };
+})
diff --git a/pkgs/development/compilers/crystal/crystal2nix.cr b/pkgs/development/compilers/crystal/crystal2nix.cr
new file mode 100644
index 00000000000..0610de5cfa4
--- /dev/null
+++ b/pkgs/development/compilers/crystal/crystal2nix.cr
@@ -0,0 +1,42 @@
+require "yaml"
+require "json"
+
+class PrefetchJSON
+  JSON.mapping(sha256: String)
+end
+
+class ShardLock
+  YAML.mapping(
+    version: Float32,
+    shards: Hash(String, Hash(String, String))
+  )
+end
+
+File.open "shards.nix", "w+" do |file|
+  file.puts %({)
+  yaml = ShardLock.from_yaml(File.read("shard.lock"))
+  yaml.shards.each do |key, value|
+    owner, repo = value["github"].split("/")
+    url = "https://github.com/#{value["github"]}"
+    rev = if value["version"]?
+            "v#{value["version"]}"
+          else
+            value["commit"]
+          end
+
+    sha256 = ""
+    args = ["--url", url, "--rev", rev]
+    Process.run("@nixPrefetchGit@", args: args) do |x|
+      x.error.each_line { |e| puts e }
+      sha256 = PrefetchJSON.from_json(x.output).sha256
+    end
+
+    file.puts %(  #{key} = {)
+    file.puts %(    owner = "#{owner}";)
+    file.puts %(    repo = "#{repo}";)
+    file.puts %(    rev = "#{rev}";)
+    file.puts %(    sha256 = "#{sha256}";)
+    file.puts %(  };)
+  end
+  file.puts %(})
+end
diff --git a/pkgs/development/compilers/crystal/crystal2nix.nix b/pkgs/development/compilers/crystal/crystal2nix.nix
new file mode 100644
index 00000000000..ac69b9b3d96
--- /dev/null
+++ b/pkgs/development/compilers/crystal/crystal2nix.nix
@@ -0,0 +1,16 @@
+{ lib, crystal, nix-prefetch-git }:
+crystal.buildCrystalPackage {
+  pname = "crystal2nix";
+  version = "unstable-2018-07-31";
+
+  nixPrefetchGit = "${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 ];
+  };
+}
diff --git a/pkgs/development/compilers/crystal/default.nix b/pkgs/development/compilers/crystal/default.nix
index d9392721fa5..409ac03d92f 100644
--- a/pkgs/development/compilers/crystal/default.nix
+++ b/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 {
@@ -38,7 +39,7 @@ let
   };
 
   generic = { version, sha256, binary, doCheck ? true }:
-  stdenv.mkDerivation rec {
+  let compiler = stdenv.mkDerivation rec {
     pname = "crystal";
     inherit doCheck version;
 
@@ -73,7 +74,7 @@ let
 
     buildInputs = [
       boehmgc libatomic_ops pcre libevent libyaml
-      llvm zlib openssl
+      llvm zlib openssl_1_0_2
     ] ++ stdenv.lib.optionals stdenv.isDarwin [
       libiconv
     ];
@@ -135,6 +136,10 @@ 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/;
@@ -142,7 +147,7 @@ let
       maintainers = with maintainers; [ manveru david50407 peterhoeg ];
       platforms = builtins.attrNames archs;
     };
-  };
+  }; in compiler;
 
 in rec {
   binaryCrystal_0_26 = genericBinary {
@@ -208,4 +213,6 @@ in rec {
   };
 
   crystal = crystal_0_30;
+
+  crystal2nix = callPackage ./crystal2nix.nix {};
 }