New exercism package

pkgs/development/tools/exercism/default.nix

@@ -0,0 +1,46 @@
+{ stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  name = "exercism-${version}";
+
+  version = "1.6.2";
+
+  src =
+    if stdenv.system == "x86_64-darwin" then
+      fetchurl {
+        url = "https://github.com/exercism/cli/releases/download/v${version}/exercism-darwin-amd64.tgz";
+        sha256 = "1w9jw52nhb5mlcj6ampzwjscdr9rja5mdn5ga2r4z2qzsqzwkpm2";
+      }
+    else if stdenv.system == "i686-darwin" then
+      fetchurl {
+        url = "https://github.com/exercism/cli/releases/download/v${version}/exercism-darwin-386.tgz";
+        sha256 = "1g5cy53mrdzq047b8hlkjrkc4bp7yhipvhf4lnw0x2jr50z73bzd";
+      }
+    else if stdenv.system == "i686-linux" then
+      fetchurl {
+        url = "https://github.com/exercism/cli/releases/download/v1.6.2/exercism-linux-386.tgz";
+        sha256 = "1akdggla9kn7v4dwkyz63bp84dihcgyph546zskiyh9bz67l5liz";
+      }
+    else if stdenv.system == "x86_64-linux" then
+      fetchurl {
+        url = "https://github.com/exercism/cli/releases/download/v1.6.2/exercism-linux-amd64.tgz";
+        sha256 = "00kp0r9xy9bw9b2854csy35pk9sxvbivxmwiy97wl9gh0acva5ng";
+      }
+    else throw "Platform: ${stdenv.system} not supported!";
+
+  buildPhase = "";
+
+  setSourceRoot = "sourceRoot=./";
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp -a exercism $out/bin
+  '';
+
+  meta = {
+    description = "A Go based command line tool for exercism.io.";
+    homepage    = http://exercism.io;
+    license     = stdenv.lib.licenses.mit;
+    platforms   = stdenv.lib.platforms.unix;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -983,6 +983,8 @@ let
 
   exempi = callPackage ../development/libraries/exempi { };
 
+  exercism = callPackage ../development/tools/exercism { };
+
   exif = callPackage ../tools/graphics/exif { };
 
   exiftags = callPackage ../tools/graphics/exiftags { };