I have been hitting my head against the current state of mirrors-support in nixpkgs around Node.

• fetchPnpmDeps: supports NIX_NPM_REGISTRY as an impure env var
• importNpmLock: no mirror support (needed in fetchurl)
• fetchYarnDeps: no mirror support
• fetchNpmDeps/prefetchNpmDeps: supports config.npmRegistryOverridesString (and npmRegistryOverrides by extension)

I was trying to get all of these under the same roof in https://github.com/NixOS/nixpkgs/pull/504349 using the fetchurl NIX_MIRRORS_<name> feature as a common baseline, but I am not sure if this is the best way forward.

For completion's sake we should probably also add support for registry.yarnpkg.org and npm.jsr.io, but I think this is all very convoluted sadly :/

fetchPnpmDeps is definitely not the best thing in the world but sadly the best we have at the moment.

Maybe I can interest you in my importPnpmLock.nix (also mirrord to GitHub). Though that is only a solution if you are okay with IFD

fetchPnpmDeps is definitely not the best thing in the world but sadly the best we have at the moment.

Maybe I can interest you in my importPnpmLock.nix (also mirrored to GitHub). Though that is only a solution if you are okay with IFD