Add graphviz package for emacs org-roam graph rendering

home/emacs/default.nix

@@ -146,18 +146,13 @@
   };
   home.packages = with pkgs; [
     # Emacs requirements
-    fd
-    ripgrep
     imagemagick
     languagetool
     wordnet
     (aspellWithDicts (ds: with ds; [en en-computers en-science]))
-
-    # For org-plot
-    gnuplot
-
-    # For EMMS
-    mp3info
+    gnuplot # For org-plot
+    graphviz # For org-roam graph
+    mp3info # For EMMS
 
     # Language-specific requirements
     sqlite
@@ -169,18 +164,7 @@
     # Customised LaTeX install
     # texlive.combined.scheme-full
     (texlive.combine {
-      inherit
-        (pkgs.texlive)
-        scheme-basic
-        dvisvgm
-        dvipng
-        wrapfig
-        amsmath
-        ulem
-        hyperref
-        capt-of
-        beamer
-        ;
+      inherit (pkgs.texlive) scheme-basic dvisvgm dvipng wrapfig amsmath ulem hyperref capt-of beamer;
     })
   ];
 }