adding untested git-secrets

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

@@ -0,0 +1,35 @@
+{ stdenv, lib, fetchFromGitHub, makeWrapper, git }:
+
+let
+  version = "1.2.1";
+  repo = "git-secrets";
+
+in stdenv.mkDerivation {
+  name = "${repo}-${version}";
+
+  src = fetchFromGitHub {
+    inherit repo;
+    owner = "awslabs";
+    rev = "v${version}";
+    sha256 = "14jsm4ks3k5d9iq3jr23829izw040pqpmv7dz8fhmvx6qz8fybzg";
+  };
+
+  buildInputs = [ makeWrapper ];
+
+  installPhase = ''
+    install -D git-secrets $out/bin/git-secrets
+
+    wrapProgram $out/bin/git-secrets \
+      --prefix PATH : "${lib.makeBinPath [ git ]}"
+
+    mkdir $out/share
+    cp -r man $out/share
+  '';
+
+  meta = {
+    description = "Prevents you from committing passwords and other sensitive information to a git repository";
+    homepage = https://github.com/awslabs/git-secretshttps://github.com/awslabs/git-secrets;
+    license = stdenv.lib.licenses.asl20;
+    platforms = stdenv.lib.platforms.all;
+  };
+}