refactor(infra): Move infrastructure into monorepo structure

nix/pkgs/gemma.nix

@@ -1,54 +0,0 @@
-{ pkgs ? import <nixpkgs> {} }:
-
-with pkgs; stdenv.mkDerivation rec {
-  name = "gemma";
-
-  src = fetchFromGitHub {
-    owner  = "tazjin";
-    repo   = "gemma";
-    rev    = "61be253d6baa99f0a2208425b8a03b444bb1b184";
-    sha256 = "0vbmz2aphcida728rc0z3k7gychs4w1778vsjbrs0ljk9qgbmyr5";
-  };
-
-  buildInputs = with lispPackages; [
-    sbcl
-    quicklisp
-    hunchentoot
-    cl-json
-    local-time
-    elmPackages.elm
-    pkgconfig
-  ];
-
-  # The build phase has three distinct things it needs to do:
-  #
-  # 1. "Compile" the Elm source into something useful to browsers.
-  #
-  # 2. Configure the Lisp part of the application to serve the compiled Elm
-  #
-  # 3. Build (and don't strip!) an executable out of the Lisp backend.
-  buildPhase = ''
-    mkdir -p $out/share/gemma $out/bin
-    mkdir .home && export HOME="$PWD/.home"
-
-    # Build Elm
-    cd frontend
-    elm-make --yes Main.elm --output $out/share/gemma/index.html
-
-    # Build Lisp
-    cd $src
-    quicklisp init
-    env GEMMA_BIN_TARGET=$out/bin/gemma sbcl --load build.lisp
-  '';
-
-  installPhase = "true";
-
-  # Stripping an SBCL executable removes the application, which is unfortunate.
-  dontStrip = true;
-
-  meta = with stdenv.lib; {
-    description = "Tool for tracking recurring tasks";
-    homepage    = "https://github.com/tazjin/gemma";
-    license     = licenses.gpl3;
-  };
-}