treewide: Migrate to the new dream2nix API

nix/packages.nix

@@ -1,57 +0,0 @@
-{
-  self,
-  nixpkgs,
-  dream2nix,
-  fenix,
-  system,
-  ...
-}: let
-  inherit (nixpkgs.legacyPackages.${system}) runCommandLocal yj;
-
-  rust-toolchain = fenix.packages.${system}.stable;
-in
-  dream2nix.lib.makeFlakeOutputs {
-    systems = [system];
-    config.projectRoot = self;
-    projects = ../projects.toml;
-
-    source = runCommandLocal "source" {nativeBuildInputs = [yj];} ''
-      cp -r ${self} $out/
-      chmod -R u+w $out
-      yj < $out/templates/package.yaml > $out/templates/package.json
-    '';
-
-    packageOverrides = {
-      tlaternet-webserver.set-toolchain.overrideRustToolchain = old: {
-        cargo = rust-toolchain.minimalToolchain;
-        rustc = rust-toolchain.minimalToolchain;
-      };
-
-      tlaternet-webserver-deps.set-toolchain.overrideRustToolchain = old: {
-        cargo = rust-toolchain.minimalToolchain;
-        rustc = rust-toolchain.minimalToolchain;
-      };
-
-      tlaternet = {
-        install-only-dist = {
-          installPhase = ''
-            cp -r $nodeModules/tlaternet/dist $out
-          '';
-        };
-      };
-
-      sharp = {
-        add-libvips = {
-          buildInputs = old:
-            old
-            ++ (with nixpkgs.legacyPackages.${system}; [
-              vips
-              pkg-config
-            ]);
-        };
-      };
-    };
-  }
-  // {
-    inherit rust-toolchain;
-  }

nix/scripts/update.sh

@@ -10,7 +10,7 @@ echo 'Note: Update the flake inputs with `nix flake update --commit-lockfile *fi
 cd "$(git rev-parse --show-toplevel)" || exit
 
 # Update cargo deps
-cd server || exit
+cd packages/server || exit
 cargo update
 
 if ! git diff --quiet Cargo.lock Cargo.toml; then

nix/update.nix

@@ -1,14 +1,25 @@
 {
+  lib,
+  self,
+  system,
   writeShellApplication,
-  cargo,
   git,
   nix,
-  npm,
-  npm-check-updates,
   yq-go,
-}:
-writeShellApplication {
-  name = "update";
-  runtimeInputs = [cargo git nix npm npm-check-updates yq-go];
-  text = builtins.readFile ./scripts/update.sh;
-}
+}: let
+  selfPackages = self.packages.${system};
+  inherit (selfPackages.server.config.deps) cargo;
+  inherit (selfPackages.templates.config.deps) npm;
+
+  npm-check-updates =
+    (builtins.elemAt (lib.attrValues
+      selfPackages.templates.config.nodejs-granular-v3.deps.npm-check-updates)
+    0)
+    .package-func
+    .result;
+in
+  writeShellApplication {
+    name = "update";
+    runtimeInputs = [cargo git nix npm npm-check-updates yq-go];
+    text = builtins.readFile ./scripts/update.sh;
+  }