How to install org-roam declaratively (Doom Emacs)

midchildan · January 6, 2023, 7:01am

I was able to get org-roam working with the following procedure:

Install emacsql-sqlite through Nix. (Installing org-roam this way wouldn’t help much because that’s not the one with native C code.)

github.com

midchildan/dotfiles/blob/081ce86a5a6d522fb2036e3ddcb40ba2efc37eb0/home/modules/emacs.nix#L22


      
            enable = lib.mkDefault true;
            package = lib.mkDefault pkgs.emacsNativeComp;
            extraConfig = ''
              (setq dired-use-ls-dired t
                    insert-directory-program "${pkgs.coreutils}/bin/ls"
                    treemacs-python-executable "${pkgs.python3}/bin/python")
            '';
            extraPackages = epkgs:
              with epkgs; [
                # include Doom Emacs dependencies that tries to build native C code
                emacsql-sqlite
                pdf-tools
                vterm
              ];
          };
          
          
home.activation = lib.mkIf config.programs.emacs.enable {
            syncDoomEmacs = lib.hm.dag.entryAfter [ "installPackages" ] ''
              queryEmacsVersion() {
                local emacs="$1"
                "$emacs" --batch --eval '(princ (format "%d\n" emacs-major-version))'

Then you need to indicate to Doom Emacs that you prefer the copy of emacsql-sqlite installed outside of Doom:

github.com

midchildan/dotfiles/blob/081ce86a5a6d522fb2036e3ddcb40ba2efc37eb0/home/files/.config/doom/packages.el#L20


      
          
          
;;
          ;;; Extra Packages
          
          
(package! japanese-holidays)
          (package! yankpad)
          
          
;; These packages attempt to build native C code at runtime. Prefer copies
          ;; installed by Nix if they exist to avoid having to make GCC globally
          ;; available.
          (package! emacsql-sqlite :built-in 'prefer)
          (package! pdf-tools :built-in 'prefer)
          
          
;;
          ;;; Disabled Packages
          
          
;; This package is used by Doom to map 'jk' in insert mode to '<Escape>'. This
          ;; caught me by surprise when I was typing this:
          ;;
          ;;     (set-fontset-font t 'cjk-misc "Hiragino Kaku Gothic Pro")
          ;;