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2af9fd20c6
the term was hard to discover, as its definition and explanation were in a very long document lacking an overview section. search did not help because it occurs so often. - clarify wording in the definition - add an overview of installable types - add "installable" to glossary - link to definition from occurrences of the term - be more precise about where store derivation outputs are processed - installable Nix expressions must evaluate to a derivation Co-authored-by: Adam Joseph <54836058+amjoseph-nixpkgs@users.noreply.github.com>
39 lines
1 KiB
Markdown
39 lines
1 KiB
Markdown
R""(
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# Examples
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* Get the build log of GNU Hello:
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```console
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# nix log nixpkgs#hello
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```
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* Get the build log of a specific store path:
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```console
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# nix log /nix/store/lmngj4wcm9rkv3w4dfhzhcyij3195hiq-thunderbird-52.2.1
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```
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* Get a build log from a specific binary cache:
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```console
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# nix log --store https://cache.nixos.org nixpkgs#hello
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```
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# Description
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This command prints the log of a previous build of the [*installable*](./nix.md#installables) on standard output.
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Nix looks for build logs in two places:
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* In the directory `/nix/var/log/nix/drvs`, which contains logs for
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locally built derivations.
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* In the binary caches listed in the `substituters` setting. Logs
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should be named `<cache>/log/<base-name-of-store-path>`, where
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`store-path` is a derivation,
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e.g. `https://cache.nixos.org/log/dvmig8jgrdapvbyxb1rprckdmdqx08kv-hello-2.10.drv`.
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For non-derivation store paths, Nix will first try to determine the
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deriver by fetching the `.narinfo` file for this store path.
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)""
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