these 4 derivations will be built:
  /nix/store/2vmlisa4xxg70vd68wms7svyqalcb2ah-letta-code-src-with-lock.drv
  /nix/store/qa3ayyphchl8mlwa2s3sag5ka2gfkaw8-letta-code-0.34.8-npm-deps.drv
  /nix/store/fl1gdbi7ds9f2nry30inq81vpd4mir4x-letta-code-0.34.8.drv
  /nix/store/wldx3c5dd6kl3nmi37mk9sgjzks04xq8-check-letta-code.drv
error: Cannot build '/nix/store/fl1gdbi7ds9f2nry30inq81vpd4mir4x-letta-code-0.34.8.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/i1x5zlp6sqdmj0x30gyc9zp5ffgkafd7-letta-code-0.34.8
       Last 25 log lines:
       > Running phase: unpackPhase
       > unpacking source archive /nix/store/vm6q8kwy79nz9dlzpdyrp7gm2cxj1ibm-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/s818f4nqxr8fngjb2al1x4hl5yjshfqp-letta-code-0.34.8-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/2026-10-09T05_06_23_192Z-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/fl1gdbi7ds9f2nry30inq81vpd4mir4x-letta-code-0.34.8.drv
error: Cannot build '/nix/store/wldx3c5dd6kl3nmi37mk9sgjzks04xq8-check-letta-code.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/cv0r9aw353xq1yiwi7g4rfffqzq4h375-check-letta-code