vanadium: +nix-tree

nix/configurations/vanadium.nix

@@ -43,6 +43,7 @@ in
             nur
             wired-notify
             emacs28 # removed, but I need it for PLFA!
+            nix-tree
 
             packages
             (import ./vanadium/nixos/overlay.nix)

nix/configurations/vanadium/home/programs.nix

@@ -49,6 +49,7 @@ in {
         pkgs.nurl
         pkgs.nvd
         pkgs.niv
+        pkgs.nix-tree
       ];
       programs = {
         neovim.enable = true;

nix/overlays/by-name/nix-tree/overlay.nix

@@ -0,0 +1,8 @@
+# The one in nixpkgs doesn't work
+# Getting nix-tree: user error (Failed parsing nix path-info output.)
+let
+  sources = import ../../../sources.nix;
+in
+  final: _: {
+    nix-tree = (import sources.nix-tree).packages.${final.system}.default;
+  }

nix/sources.json

@@ -85,6 +85,18 @@
         "rev": "cd2a9c028df820a83ca2807dc6c6e7abc3dfa7fc",
         "type": "git"
     },
+    "nix-tree": {
+        "branch": "main",
+        "description": "Interactively browse dependency graphs of Nix derivations.",
+        "homepage": "",
+        "owner": "utdemir",
+        "repo": "nix-tree",
+        "rev": "fdcac72b7261f32e2faf9866c5d759d38a19771a",
+        "sha256": "00h7crplyi5njsi146227bzrnf6rmwpzmrl1l2ckii0lmvmnsfsw",
+        "type": "tarball",
+        "url": "https://github.com/utdemir/nix-tree/archive/fdcac72b7261f32e2faf9866c5d759d38a19771a.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
     "nixos-hardware": {
         "branch": "master",
         "description": "A collection of NixOS modules covering hardware quirks.",