R""(
Examples
Get the build log of GNU Hello:
Get the build log of a specific store path:
# nix log /nix/store/lmngj4wcm9rkv3w4dfhzhcyij3195hiq-thunderbird-52.2.1
Get a build log from a specific binary cache:
# nix log --store https://cache.nixos.org nixpkgs#hello
Description
This command prints the log of a previous build of the installable on standard output.
Nix looks for build logs in two places:
- In the directory /nix/var/log/nix/drvs, which contains logs for locally built derivations.
- In the binary caches listed in the substituters setting. Logs should be named <cache>/log/<base-name-of-store-path>, where store-path is a derivation, e.g. https://cache.nixos.org/log/dvmig8jgrdapvbyxb1rprckdmdqx08kv-hello-2.10.drv. For non-derivation store paths, Nix will first try to determine the deriver by fetching the .narinfo file for this store path.
)""