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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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5
src/libstore/local-fs-store.hh
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@ -18,6 +18,9 @@ struct LocalFSStoreConfig : virtual StoreConfig
const PathSetting logDir{(StoreConfig*) this, false,
rootDir != "" ? rootDir + "/nix/var/log/nix" : settings.nixLogDir,
"log", "directory where Nix will store state"};
const PathSetting realStoreDir{(StoreConfig*) this, false,
rootDir != "" ? rootDir + "/nix/store" : storeDir, "real",
"physical path to the Nix store"};
};
class LocalFSStore : public virtual LocalFSStoreConfig, public virtual Store
@ -34,7 +37,7 @@ public:
/* Register a permanent GC root. */
Path addPermRoot(const StorePath & storePath, const Path & gcRoot);
virtual Path getRealStoreDir() { return storeDir; }
virtual Path getRealStoreDir() { return realStoreDir; }
Path toRealPath(const Path & storePath) override
{