inferior: Inferior caches store connections.

Fixes <https://issues.guix.gnu.org/48007>.
Reported by Ricardo Wurmus <rekado@elephly.net>.

Previously, at each 'inferior-eval-with-store' call, the inferior would
create a new <store-connection> object with empty caches.  Consequently,
when repeatedly calling 'inferior-package-derivation', we would not
benefit from any caching and instead recompute all the derivations for
every package.  This patch fixes it by caching <store-connection>
objects in the inferior.

* guix/inferior.scm (port->inferior): Define '%store-table' in the inferior.
(inferior-eval-with-store): Cache store connections in %STORE-TABLE.
Remove now unneeded 'dynamic-wind' with 'close-port' call.

0 files changed, 0 insertions, 0 deletions