1these 5 derivations will be built:2 /nix/store/adb9r4vd3w35xlja20b27ncwlv8qh0fk-letta-code-0.34.10.tgz.drv3 /nix/store/wb1a9378nfyhpp7l1c071bca8gpys5j9-letta-code-src-with-lock.drv4 /nix/store/wjnaw4ifzlrwlr2dcil8rppswcnjvn6l-letta-code-0.34.10-npm-deps.drv5 /nix/store/7jfd06hi4gbczkmvp18rq4sc1flfg2vr-letta-code-0.34.10.drv6 /nix/store/agb50vzfxfm2rzybd42c4yki52gw9l9y-check-letta-code.drv7error: build of '/nix/store/7jfd06hi4gbczkmvp18rq4sc1flfg2vr-letta-code-0.34.10.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=21&system=aarch64-darwin' failed: Cannot build '/nix/store/7jfd06hi4gbczkmvp18rq4sc1flfg2vr-letta-code-0.34.10.drv'.8 Reason: builder failed with exit code 1.9 Output paths:10 /nix/store/426hgkkl9llsxjyhl6iyvy1kh1vnv8pa-letta-code-0.34.1011 Last 25 log lines:12 > Running phase: unpackPhase13 > unpacking source archive /nix/store/0sh5kiba95vbcd3gh9l3b9p7lmiqc2yk-letta-code-src-with-lock14 > source root is letta-code-src-with-lock15 > Running phase: patchPhase16 > Executing npmConfigHook17 > Configuring npm18 > Validating consistency between /nix/var/nix/builds/nix-33546-689160194/letta-code-src-with-lock/npm-shrinkwrap.json and /nix/store/gcp2zhjpq63wnj3sbbahmz7ali3jadjd-letta-code-0.34.10-npm-deps/package-lock.json19 > Making cache writable20 > Setting npm_config_cache to /nix/var/nix/builds/nix-33546-689160194/cache21 > Installing dependencies22 > 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.23 > 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.24 > 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.25 > npm error code ENOTCACHED26 > npm error request to https://registry.npmjs.org/@modelcontextprotocol%2fserver-everything failed: cache mode is 'only-if-cached' but no cached response is available.27 > npm error A complete log of this run can be found in: /nix/var/nix/builds/nix-33546-689160194/cache/_logs/2026-10-10T05_28_57_706Z-debug-0.log28 >29 > ERROR: npm failed to install dependencies30 >31 > Here are a few things you can try, depending on the error:32 > 1. Set `npmDepsFetcherVersion = 2` (and update `npmDepsHash`)33 > 2. Set `makeCacheWritable = true`34 > 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.35 > 3. Set `npmFlags = [ "--legacy-peer-deps" ]`36 >37 For full logs, run:38 nix log /nix/store/7jfd06hi4gbczkmvp18rq4sc1flfg2vr-letta-code-0.34.10.drv39error: Cannot build '/nix/store/7jfd06hi4gbczkmvp18rq4sc1flfg2vr-letta-code-0.34.10.drv'.40 Reason: builder failed with exit code 1.41 Output paths:42 /nix/store/426hgkkl9llsxjyhl6iyvy1kh1vnv8pa-letta-code-0.34.1043error: Cannot build '/nix/store/agb50vzfxfm2rzybd42c4yki52gw9l9y-check-letta-code.drv'.44 Reason: 1 dependency failed.45 Output paths:46 /nix/store/w4wdi69fdk8ags18n1lxdz0ja3qm56bk-check-letta-code