fix: bail install if on a non-systemd machine

Instead suggest using cron. At some point I can probably write
up some simple instructions for a basic cron setup.

.envrc

@@ -1 +0,0 @@
-use flake . --builders ""

flake.lock

@@ -1,27 +0,0 @@
-{
-  "nodes": {
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1741851582,
-        "narHash": "sha256-cPfs8qMccim2RBgtKGF+x9IBCduRvd/N5F4nYpU0TVE=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "6607cf789e541e7873d40d3a8f7815ea92204f32",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "root": {
-      "inputs": {
-        "nixpkgs": "nixpkgs"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}

flake.nix

@@ -1,34 +0,0 @@
-{
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-unstable";
-
-  outputs = {
-    self,
-    nixpkgs,
-  }: let
-    # Compose a flake for multiple systems directly. More systems, e.g. aarch64-darwin
-    # can be supported by adding them to the systems list.
-    systems = ["x86_64-linux" "aarch64-linux"];
-    forEachSystem = nixpkgs.lib.genAttrs systems;
-    pkgsForEach = nixpkgs.legacyPackages;
-  in {
-    packages = forEachSystem (system: {
-      # Add a discorss package, and alias default package to it.
-      # This will allow 'nix run .', which calls the default package.
-      default = self.packages.${system}.discorss;
-      discorss = pkgsForEach.${system}.callPackage ./nix/package.nix {};
-    });
-
-    devShells = forEachSystem (system: {
-      default = pkgsForEach.${system}.mkShellNoCC {
-        packages = [
-          # Add the Discorss package to the shell
-          self.packages.${system}.discorss
-
-          # Add the *dependencies* of the Discorss package to the shell
-          # so that it can be used to hack on the script itself.
-          self.packages.${system}.discorss.propagatedBuildInputs
-        ];
-      };
-    });
-  };
-}

install.sh

@@ -13,6 +13,14 @@ printf "\e[1;34mDisco\e[1;38;5;208mRSS\e[0m Install Helper Script\n\n"
 
 workingDir=$(pwd)
 
+# bail if we're on a non-systemd system, suggest cron
+if [[ -d /run/systemd/system ]]; then
+    printf "systemd detected..."
+else
+    printf "This script and DiscoRSS in general are optimized for systemd! You can use cron as a substitute but I haven't written any documentation for it, so you're on your own for now!"
+    exit 127 # command not found exit code
+fi
+
 printf "Would you like the systemd service and timer files created for you? [y/n]: "
 read answer
 if [[ "$answer" =~ ^([yY])$ ]]; then

nix/package.nix

@@ -1,53 +0,0 @@
-{
-  lib,
-  stdenvNoCC,
-  makeWrapper,
-  python312,
-  ...
-}:
-stdenvNoCC.mkDerivation (finalAttrs: {
-  pname = "discorss";
-  version = "0.0.1";
-
-  # Point to the repository root for the source. `builtins.path` is used to construct
-  # a pure and reproducible source path that doesn't change based on the name
-  # of the directory our source code lives in. Alternative to this is to just use it
-  # directly, as follows:
-  # `src = ../.;`
-  src = builtins.path {
-    path = ../.;
-    name = "discorss"; # the directory will always be named discorss in the eyes of Nix
-    filter = lib.cleanSourceFilter; # avoid copying junk files and vsc dirs to the store
-  };
-
-  # programs and libraries *used at build-time* that, if they are a compiler or similar tool, produce
-  # code to run at run-time. In other words, tools used to build the new derivation
-  # Alternative is buildInputs, which includes programs and libraries used by the new derivation at run-time
-  nativeBuildInputs = [makeWrapper];
-
-  # Normally propagatedBuildInputs get, well, propagated to the final build. This is not the
-  # case for s since we omit a handful of shell hooks that would handle it for us. We can
-  # still use propagatedBuildInputs to remain close to the standard, but we will have to
-  # pass it to the wrapper manually.
-  propagatedBuildInputs = [
-    # Create a python wrapper with the dependencies that we need.
-    # This will produce a /nix/store/some-hash-python/bin/python3 that has the modules
-    # our program needs.
-    (python312.withPackages (ps: with ps; [feedparser requests]))
-  ];
-
-  dontUnpack = true; # source is not an archive
-  dontConfigure = true; # there is no configure script
-  dontPatch = true; # we are building from source, patches are redundant
-
-  buildPhase = ''
-    runHook preBuild
-
-    # Create a wrapper for Discorss with the specific version of Python (with dependencies)
-    # added to its PATH.
-    makeWrapper $src/discorss.py $out/bin/discorss \
-      --prefix PATH : "${lib.makeBinPath finalAttrs.propagatedBuildInputs}"
-
-    runHook postBuild
-  '';
-})