this derivation will be built:
  /nix/store/5ak7qbprgvb90yfpm8dd57wbgw3b46c4-claude-code-router-3.0.20.drv
error: build of '/nix/store/5ak7qbprgvb90yfpm8dd57wbgw3b46c4-claude-code-router-3.0.20.drv' on 'ssh-ng://nix-remote-builder@bld3.m.ntd.one' failed: Cannot build '/nix/store/5ak7qbprgvb90yfpm8dd57wbgw3b46c4-claude-code-router-3.0.20.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/zgd9h1w5480xw0aslvrzhv185aq7wlia-claude-code-router-3.0.20
       Last 20 log lines:
       > Running phase: unpackPhase
       > unpacking source archive /nix/store/z7jzi2k5vk4622vxh1q98pb1723d5qvk-source
       > source root is source
       > Running phase: patchPhase
       > Executing npmConfigHook
       > Configuring npm
       > Validating consistency between /build/source/package-lock.json and /nix/store/6i028ch6kqmgfy4azp28zxn23gz2pxk7-claude-code-router-3.0.20-npm-deps/package-lock.json
       > Making cache writable
       > Setting npm_config_cache to /build/cache
       > Installing dependencies
       > /nix/store/0y8b0dqr0mly4a3zr4w3iydz3h7v6c0g-npm-config-hook/nix-support/setup-hook: line 125: npm: command not found
       >
       > ERROR: npm failed to install dependencies
       >
       > Here are a few things you can try, depending on the error:
       > 1. Set `npmDepsFetcherVersion = 2` (and update `npmDepsHash`)
       > 2. Set `makeCacheWritable = true`
       >   Note that this won't help if npm is complaining about not being able to write to the logs directory -- look above that for the actual error.
       > 3. Set `npmFlags = [ "--legacy-peer-deps" ]`
       >
       For full logs, run:
         nix log /nix/store/5ak7qbprgvb90yfpm8dd57wbgw3b46c4-claude-code-router-3.0.20.drv
error: Cannot build '/nix/store/5ak7qbprgvb90yfpm8dd57wbgw3b46c4-claude-code-router-3.0.20.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/zgd9h1w5480xw0aslvrzhv185aq7wlia-claude-code-router-3.0.20