gef: init at 2021.01

pkgs/gef/default.nix

@@ -0,0 +1,21 @@
+{ stdenv, fetchFromGitHub, makeWrapper, gdb }:
+let
+  src = fetchFromGitHub {
+    owner = "hugsy";
+    repo = "gef";
+    rev = "2021.01";
+    sha256 = "0gw112s16pdjd5csp8ap0qq2d3bkp2s8pyhjbw4f8k0mkgy1j66i";
+  };
+
+in
+stdenv.mkDerivation {
+  name = "gef";
+  phases = [ "installPhase" ];
+  buildInputs = [ makeWrapper ];
+  installPhase = ''
+    mkdir -p "$out/bin"
+    makeWrapper "${gdb}/bin/gdb" "$out/bin/gef" \
+        --add-flags "-x ${src}/gef.py" \
+        --add-flags "-ex 'gef config context.clear_screen 0'"
+  '';
+}