diff options
| -rw-r--r-- | doc/manual/rl-next/upgrade-nix-override.md | 6 | ||||
| -rw-r--r-- | src/nix/upgrade-nix.cc | 17 |
2 files changed, 23 insertions, 0 deletions
diff --git a/doc/manual/rl-next/upgrade-nix-override.md b/doc/manual/rl-next/upgrade-nix-override.md new file mode 100644 index 000000000..d3046ff13 --- /dev/null +++ b/doc/manual/rl-next/upgrade-nix-override.md @@ -0,0 +1,6 @@ +--- +synopsis: add --store-path argument to `nix upgrade-nix`, to manually specify the Nix to upgrade to +cls: 953 +--- + +`nix upgrade-nix` by default downloads a manifest to find the new Nix version to upgrade to, but now you can specify `--store-path` to upgrade Nix to an arbitrary version from the Nix store. diff --git a/src/nix/upgrade-nix.cc b/src/nix/upgrade-nix.cc index 4940d93f8..31a051246 100644 --- a/src/nix/upgrade-nix.cc +++ b/src/nix/upgrade-nix.cc @@ -21,6 +21,8 @@ struct CmdUpgradeNix : MixDryRun, EvalCommand Path profileDir; std::string storePathsUrl = "https://github.com/NixOS/nixpkgs/raw/master/nixos/modules/installer/tools/nix-fallback-paths.nix"; + std::optional<Path> overrideStorePath; + CmdUpgradeNix() { addFlag({ @@ -32,6 +34,13 @@ struct CmdUpgradeNix : MixDryRun, EvalCommand }); addFlag({ + .longName = "store-path", + .description = "A specific store path to upgrade Nix to", + .labels = {"store-path"}, + .handler = {&overrideStorePath}, + }); + + addFlag({ .longName = "nix-store-paths-url", .description = "The URL of the file that contains the store paths of the latest Nix release.", .labels = {"url"}, @@ -246,6 +255,14 @@ struct CmdUpgradeNix : MixDryRun, EvalCommand /* Return the store path of the latest stable Nix. */ StorePath getLatestNix(ref<Store> store) { + if (this->overrideStorePath) { + printTalkative( + "skipping Nix version query and using '%s' as latest Nix", + *this->overrideStorePath + ); + return store->parseStorePath(*this->overrideStorePath); + } + Activity act(*logger, lvlInfo, actUnknown, "querying latest Nix version"); // FIXME: use nixos.org? |