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UDSRemoteStore: Support the 'root' store parameter

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Useful when we're using a daemon with a chroot store, e.g.

  $ NIX_DAEMON_SOCKET_PATH=/tmp/chroot/nix/var/nix/daemon-socket/socket nix-daemon --store /tmp/chroot

Then the client can now connect with

  $ nix build --store unix:///tmp/chroot/nix/var/nix/daemon-socket/socket?root=/tmp/chroot nixpkgs#hello
This commit is contained in:
Eelco Dolstra 2021-06-18 17:04:11 +02:00
parent e6150de90d
commit 4202a3bc4e
7 changed files with 16 additions and 21 deletions
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2
src/libstore/optimise-store.cc
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@ -198,7 +198,7 @@ void LocalStore::optimisePath_(Activity * act, OptimiseStats & stats,
/* Make the containing directory writable, but only if it's not
the store itself (we don't want or need to mess with its
permissions). */
bool mustToggle = dirOf(path) != realStoreDir;
bool mustToggle = dirOf(path) != realStoreDir.get();
if (mustToggle) makeWritable(dirOf(path));
/* When we're done, make the directory read-only again and reset