these 5 derivations will be built:
  /nix/store/pf5386fj6mxh9m9g475rdhxi7hxggj0x-letta-code-0.34.10.tgz.drv
  /nix/store/ffm6rh6zhh2wy4kz1zwqldjknfj4jxwd-letta-code-src-with-lock.drv
  /nix/store/6bracavinv7k7wrsp0kj37qqw83j0gi9-letta-code-0.34.10-npm-deps.drv
  /nix/store/w8g2nwamwkk3x654rzc1wyqjfhn4df30-letta-code-0.34.10.drv
  /nix/store/vavl5jabawpdghbcvchvqyc5zgwgj62b-check-letta-code.drv
error: Cannot build '/nix/store/w8g2nwamwkk3x654rzc1wyqjfhn4df30-letta-code-0.34.10.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/qn4nv9sd1r5gkcngchfkr82nrwfw3bwd-letta-code-0.34.10
       Last 25 log lines:
       > Running phase: unpackPhase
       > unpacking source archive /nix/store/dpqi70m9db5y635bnbqr8gqa6v45215x-letta-code-src-with-lock
       > source root is letta-code-src-with-lock
       > Running phase: patchPhase
       > Executing npmConfigHook
       > Configuring npm
       > Validating consistency between /build/letta-code-src-with-lock/npm-shrinkwrap.json and /nix/store/gcp2zhjpq63wnj3sbbahmz7ali3jadjd-letta-code-0.34.10-npm-deps/package-lock.json
       > Making cache writable
       > Setting npm_config_cache to /build/cache
       > Installing dependencies
       > npm warn Unknown env config "nodedir". This will stop working in the next major version of npm. See `npm help npmrc` for supported config options.
       > npm warn Unknown env config "platform". This will stop working in the next major version of npm. See `npm help npmrc` for supported config options.
       > npm warn Unknown env config "arch". This will stop working in the next major version of npm. See `npm help npmrc` for supported config options.
       > npm error code ENOTCACHED
       > npm error request to https://registry.npmjs.org/@modelcontextprotocol%2fserver-everything failed: cache mode is 'only-if-cached' but no cached response is available.
       > npm error A complete log of this run can be found in: /build/cache/_logs/2026-10-10T05_26_20_866Z-debug-0.log
       >
       > 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/w8g2nwamwkk3x654rzc1wyqjfhn4df30-letta-code-0.34.10.drv
error: Cannot build '/nix/store/vavl5jabawpdghbcvchvqyc5zgwgj62b-check-letta-code.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/39f0qy0mxfrxhwf19kk6hdvrbddqx031-check-letta-code