config: add hostname-based conditional config scopes #7923
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This enables configuration to be conditionally applied based on the hostname set in `operation.hostname`. Users can now use `--when.hostnames = ["host-a", "host-b"]` in their config files to apply settings only on specific machines. Fixes: jj-vcs#6441
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yuja
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Nov 4, 2025
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This enables configuration to be conditionally applied based on the hostname set in
operation.hostname. Users can now use--when.hostnames = ["host-a", "host-b"]in their config files to apply settings only on specific machines. I think this would be a great addition as e.g. I have the same folder structure on my work and personal machine, so I can't use--when.repositoriesto distinguish config scopes.This is my first contribution to jj, so if I did something wrong let me know!
Checklist
If applicable:
CHANGELOG.mdREADME.md,docs/,demos/)cli/src/config-schema.json)