make * composable; add install medium; archive prevoius code

environments/dev/rust/default.nix

@@ -1,32 +0,0 @@
-{ gitpkgs ? import /home/steveej/src/github/NixOS/nixpkgs {}
-, pkgs ? gitpkgs
-, name ? "generic"
-, version ? "Stable"
-, extraBuildInputs ? []
-}: 
-let 
-  rustPackages = builtins.getAttr "rust${version}" pkgs;
-  rustc = rustPackages.rustc;
-  rustShellHook = { rustc, name }: ''
-    rustname=rust_${rustc.version}_${name}
-    setPS1 $rustname
-    unset name
-  '';
-  commonVimRC = ''
-  '';
-in pkgs.stdenv.mkDerivation {
-  inherit name;
-  buildInputs = with rustPackages;[
-    ( import ./vim-rust.nix { pkgs=gitpkgs; commonRC=commonVimRC;
-        inherit rustc;
-        racerd=pkgs.rustracerd;
-    })
-    rustc cargo
-  ] ++ [
-    pkgs.rustfmt
-  ] ++ extraBuildInputs;
-  shellHook = (rustShellHook){
-    inherit name;
-    inherit rustc;
-  };
-}