| nix-store --read-log(1) | General Commands Manual | nix-store --read-log(1) |
nix-store --read-log - print build log
nix-store {--read-log | -l} paths…
The operation --read-log prints the build log of the specified store paths on standard output. The build log is whatever the builder of a derivation wrote to standard output and standard error. If a store path is not a derivation, the deriver of the store path is used.
Build logs are kept in /nix/var/log/nix/drvs. However, there is no guarantee that a build log is available for any particular store path. For instance, if the path was downloaded as a pre-built binary through a substitute, then the log is unavailable.
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$ nix-store --read-log $(which ktorrent) building /nix/store/dhc73pvzpnzxhdgpimsd9sw39di66ph1-ktorrent-2.2.1 unpacking sources unpacking source archive /nix/store/p8n1jpqs27mgkjw07pb5269717nzf5f8-ktorrent-2.2.1.tar.gz ktorrent-2.2.1/ ktorrent-2.2.1/NEWS ...