zsh/neovim: initial bits for ocaml/opam support.. maybe

configs/neovim.nix

@@ -146,7 +146,6 @@ let
 in
 {
   environment.systemPackages = with pkgs; [
-    nixpkgs-fmt
     elmPackages.elm
     elmPackages.elm-format
     elmPackages.elm-language-server
@@ -160,9 +159,14 @@ in
     luaformatter
     luajitPackages.lua-lsp
     manix
+    nixpkgs-fmt
     nodejs
     nodePackages.prettier
     nodePackages.typescript-language-server
+    ocaml
+    ocamlPackages.ocamlformat
+    ocamlPackages.utop
+    opam
     perl
     perlPackages.PerlCritic
     perlPackages.PLS

configs/zsh.nix

@@ -64,6 +64,8 @@
         fi
       }
 
+      #[[ ! -r $HOME/.opam/opam-init/init.zsh ]] || source $HOME/.opam/opam-init/init.zsh  > /dev/null 2> /dev/null
+
       eval "$(direnv hook zsh)"
     '';
   };

pkgs/tic-80.nix

@@ -0,0 +1,33 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, pkgs
+, ...
+}:
+stdenv.mkDerivation rec {
+  pname = "tic-80";
+  version = "1.1.2837";
+
+  src = fetchFromGitHub {
+    owner = "nesbox";
+    repo = "TIC-80";
+    rev = "v${version}";
+    sha256 = "";
+  };
+
+  nativeBuildInputs = with pkgs; [
+    gcc
+    pkg-config
+    SDL2
+    ruby
+    lua
+  ];
+
+  meta = with lib; {
+    description = "Fantasy computer for making, playing and sharing games.";
+    homepage = "https://tic80.com";
+    license = licenses.mit;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ qbit ];
+  };
+}