2023-03-23 17:27:41 +02:00
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# Name
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`nix-store --read-log` - print build log
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# Synopsis
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`nix-store` {`--read-log` | `-l`} *paths…*
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# Description
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The operation `--read-log` prints the build log of the specified store
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paths on standard output. The build log is whatever the builder of a
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derivation wrote to standard output and standard error. If a store path
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is not a derivation, the deriver of the store path is used.
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Build logs are kept in `/nix/var/log/nix/drvs`. However, there is no
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guarantee that a build log is available for any particular store path.
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For instance, if the path was downloaded as a pre-built binary through a
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substitute, then the log is unavailable.
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{{#include ./opt-common.md}}
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{{#include ../opt-common.md}}
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{{#include ../env-common.md}}
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# Example
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```console
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2023-04-30 16:52:38 +03:00
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$ nix-store --read-log $(which ktorrent)
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2023-03-23 17:27:41 +02:00
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building /nix/store/dhc73pvzpnzxhdgpimsd9sw39di66ph1-ktorrent-2.2.1
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unpacking sources
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unpacking source archive /nix/store/p8n1jpqs27mgkjw07pb5269717nzf5f8-ktorrent-2.2.1.tar.gz
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ktorrent-2.2.1/
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ktorrent-2.2.1/NEWS
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...
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```
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