2 files changed, 41 insertions, 0 deletions
diff --git a/pkgs/development/tools/impl/default.nix b/pkgs/development/tools/impl/default.nix
new file mode 100644
index 000000000000..69bbf8afe5ac
--- /dev/null
+++ b/pkgs/development/tools/impl/default.nix
@@ -0,0 +1,30 @@
+{ buildGoPackage
+, lib
+, fetchFromGitHub
+}:
+
+buildGoPackage rec {
+  name = "impl-unstable-${version}";
+  version = "2018-02-27";
+  rev = "3d0f908298c49598b6aa84f101c69670e15d1d03";
+
+  goPackagePath = "github.com/josharian/impl";
+
+  src = fetchFromGitHub {
+    inherit rev;
+
+    owner = "josharian";
+    repo = "impl";
+    sha256 = "0xpip20x5vclrl0by1760lg73v6lj6nmkbiazlskyvpkw44h8a7c";
+  };
+
+  goDeps = ./deps.nix;
+
+  meta = with lib; {
+    description = "impl generates method stubs for implementing an interface.";
+    homepage = https://github.com/josharian/impl;
+    license = licenses.mit;
+    maintainers = with maintainers; [ kalbasit ];
+    platforms = platforms.linux ++ platforms.darwin;
+  };
+}
diff --git a/pkgs/development/tools/impl/deps.nix b/pkgs/development/tools/impl/deps.nix
new file mode 100644
index 000000000000..3477aaed6075
--- /dev/null
+++ b/pkgs/development/tools/impl/deps.nix
@@ -0,0 +1,11 @@
+[
+  {
+    goPackagePath = "golang.org/x/tools";
+    fetch = {
+      type = "git";
+      url = "https://go.googlesource.com/tools";
+      rev = "96e9e165b75e735822645eff82850b08c377be36";
+      sha256 = "1zj9ck5sg9b0pphxybmvxf64hhcap7v7j37fx3v5aknf18crjjdg";
+    };
+  }
+]