The Cargo.lock file is missing for the build

[NicolasGuilloux]

Hi! :)

The import fails to build the derivation because it fails to locate the Cargo.lock. Do you know how to fix that?

ERROR: The Cargo.lock file doesn't exist

Cargo.lock is needed to make sure that cargoSha256 doesn't change
when the registry is updated.

builder for '/nix/store/l1w9wp7whiy7fjrics2b2wb0ha1bbrly-envfs-0.0.1-vendor.tar.gz.drv' failed with exit code 1
cannot build derivation '/nix/store/w4v3rf1na2ddqmkfh68y5y3zxry3kdy2-envfs-0.0.1.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/lrn0mflw7mjnlyyjrfgzvc5ym2lv80i8-system-path.drv': 1 dependencies couldn't be built

[Mic92]

Weird. Only seems to happen in 20.09: https://github.com/Mic92/envfs/runs/1804920055#step:5:1036

[Mic92]

Working on a fix here: #12

[NicolasGuilloux]

It works! Thanks a lot <3