Wolfgang Walther 9a146d1244 postgresql.withPackages.pg_config: fix paths ...

Previously, pg_config would report the paths of the underlying
postgresql derivation and not the paths of the buildEnv that
postgresql.withPackages creates.

That's a problem when users of pg_config use it to find PostgreSQL's
sharedir, in which they'd like to find the extensions added via
withPackages. Those are only linked into the created buildEnv, but not
available in the postgresql derivation.

By providing our own nix-support/pg_config.env file, we can swap out
those paths. We also do the same for the -man output, because this
output is linked into buildEnv as well. Other paths, which are not
available in the buildEnv environment, will still link to the original
postgresql derivation. Win-win!

2025-06-24 10:01:07 +02:00

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