build: update nix flake for 0.2.1, fix github action commands

Author: mattyg

.github/workflows/test.yaml

@@ -48,10 +48,10 @@ jobs:
         run: nix develop -c $SHELL -c "npm ci"
 
       - name: Clippy
-        run: nix develop -c $SHELL -c "npm run cargo:clippy"
+        run: nix develop -c $SHELL -c "cargo clippy"
 
       - name: Check rust formatting
-        run: nix develop -c $SHELL -c "npm run cargo:fmt:check"
+        run: nix develop -c $SHELL -c "cargo fmt"
 
       - name: Build Happ
         run: nix develop -c $SHELL -c "npm run build:happ"

flake.lock

@@ -8,7 +8,7 @@
     holochain = {
       url = "github:holochain/holochain";
       inputs.versions.follows = "versions";
-      inputs.holochain.url = "github:holochain/holochain/holochain-0.3.0-beta-dev.9";
+      inputs.holochain.url = "github:holochain/holochain/holochain-0.2.1";
     };
   };