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clarify setting options on the command line

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Valentin Gagarin 2023-06-20 12:12:23 +02:00
parent bc7324e912
commit 68c6219343
1 changed files with 13 additions and 3 deletions
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14
doc/manual/src/command-ref/conf-file-prefix.md
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@ -49,12 +49,22 @@ extra-substituters = c d
defines the `substituters` setting to be `a b c d`.
Unknown option names are not an error, and are simply ignored with a warning.
## Command line flags
Every configuration setting has a corresponding command line flag (e.g. `--max-jobs 16`).
Configuration options can be set on the command line, overriding the values set in the [configuration file](#configuration-file):
- Every configuration setting has corresponding command line flag (e.g. `--max-jobs 16`).
Boolean settings do not need an argument, and can be explicitly disabled with the `no-` prefix (e.g. `--keep-failed` and `--no-keep-failed`).
Existing settings can be appended to using the `extra-` prefix (e.g. `--extra-substituters`).
Unknown option names are invalid flags (unless there is already a flag with that name), and are rejected with an error.
- The flag `--option <name> <value>` is interpreted exactly like a `<name> = <value>` in a setting file.
Unknown option names are ignored with a warning.
The `extra-` prefix is supported for settings that take a list of items (e.g. `--extra-trusted users alice` or `--option extra-trusted-users alice`).
# Available settings