New package: git-remote-gcrypt.

A git remote for working with encrypted git repositories.

Closes #4100

pkgs/applications/version-management/git-and-tools/default.nix

···
 
   git-remote-hg = callPackage ./git-remote-hg { };
 
+  gitRemoteGcrypt = callPackage ./git-remote-gcrypt { };
 }

pkgs/applications/version-management/git-and-tools/git-remote-gcrypt/default.nix

···
+{ stdenv, fetchgit, docutils }:
+
+stdenv.mkDerivation {
+  name = "git-remote-gcrypt-20140715";
+
+  # Use joeyh's branch that works better with git-annex
+  src = fetchgit {
+    url = "https://github.com/joeyh/git-remote-gcrypt.git";
+    rev = "5dcc77f507d497fe4023e94a47b6a7a1f1146bce";
+    sha256 = "d509efde143cfec4898872b5bb423d52d5d1c940b6a1e21b8444c904bdb250c2";
+  };
+
+  # Required for rst2man.py
+  buildInputs = [ docutils ];
+
+  # The install.sh script expects rst2man, but here it's named rst2man.py
+  patchPhase = ''
+    sed -i 's/rst2man/rst2man.py/g' install.sh
+  '';
+
+  installPhase = ''
+    prefix="$out" ./install.sh
+  '';
+
+  meta = {
+    homepage = "https://github.com/joeyh/git-remote-gcrypt";
+    description = "GNU Privacy Guard-encrypted git remote";
+    license = self.stdenv.lib.licenses.gpl3;
+  };
+}