Automatically add prefixed flake inputs as emacs packages

packages/packages.nix

@@ -1,65 +1,77 @@
 pkgs: epkgs:
-with epkgs; [
-  meow
-  dracula-theme
-  solaire-mode
-  nerd-icons
-  nerd-icons-completion
-  nerd-icons-ibuffer
-  nerd-icons-dired
-  treemacs-nerd-icons
-  eat
-  eshell-syntax-highlighting
-  esh-autosuggest
-  clipetty
-  sideline
-  sideline-flymake
-  rainbow-delimiters
-  delight
-  vertico
-  marginalia
-  consult
-  orderless
-  embark
-  embark-consult
-  magit
-  magit-delta
-  magit-todos
-  diff-hl
-  corfu
-  corfu-terminal
-  kind-icon
-  cape
-  which-key
-  # nix-mode
-  (nix-ts-mode.overrideAttrs (_: {
-    src = pkgs.nix-ts-mode-source;
-  }))
-  unisonlang-mode
-  purescript-mode
-  dhall-mode
-  envrc
-  inheritenv
-  popper
-  paredit
-  yaml-mode
-  hl-todo
-  markdown-mode
-  haskell-mode
-  terraform-mode
-  diredfl
-  (pkgs.callPackage ./indent-bars.nix {
-    src = pkgs.indent-bars-source;
-    inherit (epkgs) trivialBuild compat;
-  })
-  (pkgs.callPackage ./combobulate.nix {
-    src = pkgs.combobulate-source;
-    inherit (epkgs) trivialBuild;
-  })
-  org-roam
-  consult-org-roam
-  (pkgs.callPackage ./agenix-el.nix {
-    src = pkgs.agenix-el-source;
-    inherit (epkgs) trivialBuild;
-  })
-]
+with epkgs; let
+  inherit (pkgs) lib;
+
+  depsPerPackage = {
+    indent-bars = [compat];
+  };
+
+  # *Attrset* containig extra emacs packages from flake inputs
+  extraPackages = lib.mapAttrs (inputName: input: let
+    deps = depsPerPackage.${inputName} or [];
+  in
+    trivialBuild {
+      pname = inputName;
+      src = input.outPath;
+      version = input.shortRev;
+      propagatedUserEnvPkgs = deps;
+      buildInputs = deps;
+    })
+  pkgs.extra-package-inputs;
+
+  # *List* containing emacs packages from (M)ELPA
+  mainPackages =
+    builtins.filter
+    # if an extra package has the same name then give precedence to it
+    (package: ! builtins.elem package.pname (builtins.attrNames extraPackages))
+    [
+      meow
+      dracula-theme
+      solaire-mode
+      nerd-icons
+      nerd-icons-completion
+      nerd-icons-ibuffer
+      nerd-icons-dired
+      treemacs-nerd-icons
+      eat
+      eshell-syntax-highlighting
+      esh-autosuggest
+      clipetty
+      sideline
+      sideline-flymake
+      rainbow-delimiters
+      delight
+      vertico
+      marginalia
+      consult
+      orderless
+      embark
+      embark-consult
+      magit
+      magit-delta
+      magit-todos
+      diff-hl
+      corfu
+      corfu-terminal
+      kind-icon
+      cape
+      which-key
+      # nix-mode
+      unisonlang-mode
+      purescript-mode
+      dhall-mode
+      envrc
+      inheritenv
+      popper
+      paredit
+      yaml-mode
+      hl-todo
+      markdown-mode
+      haskell-mode
+      terraform-mode
+      diredfl
+      org-roam
+      consult-org-roam
+    ];
+in
+  mainPackages ++ (builtins.attrValues extraPackages)