zsh-powerlevel9k: init at 2017-11-10

To use, add this option to your configuration.nix:
`programs.zsh.promptInit = "source ${pkgs.zsh-powerlevel9k}/share/zsh-powerlevel9k/powerlevel9k.zsh-theme";`

pkgs/shells/zsh-powerlevel9k/default.nix

@@ -0,0 +1,29 @@
+{ stdenv, fetchFromGitHub, zsh }:
+
+# To make use of this derivation, use
+# `programs.zsh.promptInit = "source ${pkgs.zsh-powerlevel9k}/share/zsh-powerlevel9k/powerlevel9k.zsh-theme";`
+
+stdenv.mkDerivation rec {
+  name = "powerlevel9k-${version}";
+  version = "2017-11-10";
+  src = fetchFromGitHub {
+    owner = "bhilburn";
+    repo = "powerlevel9k";
+    rev = "87acc51acab3ed4fd33cda2386abed6f98c80720";
+    sha256 = "0v1dqg9hvycdkcvklg2njff97xwr8rah0nyldv4xm39r77f4yfvq";
+  };
+
+  installPhase= ''
+    install -D powerlevel9k.zsh-theme --target-directory=$out/share/zsh-powerlevel9k
+    install -D functions/* --target-directory=$out/share/zsh-powerlevel9k/functions
+  '';
+
+  meta = {
+    description = "A beautiful theme for zsh";
+    homepage = https://github.com/bhilburn/powerlevel9k;
+    license = stdenv.lib.licenses.mit;
+
+    platforms = stdenv.lib.platforms.unix;
+    maintainers = [ stdenv.lib.maintainers.pierrechevalier83 ];
+  };
+}