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| author | Maximilian Bosch <maximilian@mbosch.me> | 2020-10-21 21:31:19 +0200 |
|---|---|---|
| committer | Maximilian Bosch <maximilian@mbosch.me> | 2020-11-05 20:12:37 +0100 |
| commit | 3a63fc6cd515fb009b17d864fede23a356832a5e (patch) | |
| tree | 55e28e51b919af152beeca37622e692c73782184 /src/libstore/store-api.hh | |
| parent | 387f824cab50682e373ade49dcec4e6f99c10a42 (diff) | |
Allow substituting paths when building remotely using `ssh-ng://`
Until now, it was not possible to substitute missing paths from e.g.
`https://cache.nixos.org` on a remote server when building on it using
the new `ssh-ng` protocol.
This is because every store implementation except legacy `ssh://`
ignores the substitution flag passed to `Store::queryValidPaths` while
the `legacy-ssh-store` substitutes the remote store using
`cmdQueryValidPaths` when the remote store is opened with `nix-store
--serve`.
This patch slightly modifies the daemon protocol to allow passing an
integer value suggesting whether to substitute missing paths during
`wopQueryValidPaths`. To implement this on the daemon-side, the
substitution logic from `nix-store --serve` has been moved into a
protected method named `Store::substitutePaths` which gets currently
called from `LocalStore::queryValidPaths` and `Store::queryValidPaths`
if `maybeSubstitute` is `true`.
Fixes #2770
Diffstat (limited to 'src/libstore/store-api.hh')
| -rw-r--r-- | src/libstore/store-api.hh | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/libstore/store-api.hh b/src/libstore/store-api.hh index f77bc21d1..9a373b561 100644 --- a/src/libstore/store-api.hh +++ b/src/libstore/store-api.hh @@ -360,6 +360,11 @@ protected: public: + /* If requested, substitute missing paths. This + implements nix-copy-closure's --use-substitutes + flag. */ + void substitutePaths(const StorePathSet & paths); + /* Query which of the given paths is valid. Optionally, try to substitute missing paths. */ virtual StorePathSet queryValidPaths(const StorePathSet & paths, |