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Reepca Russelstein
c87a9b855e
At this point the value of 'st.st_mode' is from before canonicalization, so
restoring to that will undo the permissions aspect of the canonicalization for
a top-level directory store item.
Fixes #1104, introduced in
ae18b3d9e6 (https://codeberg.org/guix/guix/commit/ae18b3d9e6bd0c184505a094851448d08555e23e).
* nix/libstore/build.cc (DerivationGoal::registerOutputs): update 'st' with
post-canonicalization permissions before making actualPath
temporarily-writable.
* tests/store.scm ("build outputs aren't writable"): new test.
Change-Id: I5e5eaa79fa6b7f81e1d12fd285883c762a22ce5a
Signed-off-by: Ludovic Courtès <ludo@gnu.org>