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nix upgrade-nix: make the source URL an option

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This new option enables organizations to more easily manage their Nix
fleet's deployment, and ensure a consistent and planned rollout of Nix
upgrades.
This commit is contained in:
Graham Christensen 2023-11-10 12:12:13 -05:00
parent 458e511dc4
commit fd5a4a8467
3 changed files with 17 additions and 6 deletions
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10
src/libstore/globals.hh
View file

@ -1084,6 +1084,16 @@ public:
true, // document default
Xp::ConfigurableImpureEnv
};
Setting<std::string> upgradeNixStorePathUrl{
this,
"https://github.com/NixOS/nixpkgs/raw/master/nixos/modules/installer/tools/nix-fallback-paths.nix",
"upgrade-nix-store-path-url",
R"(
Used by `nix upgrade-nix`, the URL of the file that contains the
store paths of the latest Nix release.
)"
};
};

7
src/nix/upgrade-nix.cc
View file

@ -14,7 +14,6 @@ using namespace nix;
struct CmdUpgradeNix : MixDryRun, StoreCommand
{
Path profileDir;
std::string storePathsUrl = "https://github.com/NixOS/nixpkgs/raw/master/nixos/modules/installer/tools/nix-fallback-paths.nix";
CmdUpgradeNix()
{
@ -30,7 +29,7 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
.longName = "nix-store-paths-url",
.description = "The URL of the file that contains the store paths of the latest Nix release.",
.labels = {"url"},
.handler = {&storePathsUrl}
.handler = {&(std::string&) settings.upgradeNixStorePathUrl}
});
}
@ -44,7 +43,7 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
std::string description() override
{
return "upgrade Nix to the stable version declared in Nixpkgs";
return "upgrade Nix to the latest stable version";
}
std::string doc() override
@ -145,7 +144,7 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
Activity act(*logger, lvlInfo, actUnknown, "querying latest Nix version");
// FIXME: use nixos.org?
auto req = FileTransferRequest(storePathsUrl);
auto req = FileTransferRequest((std::string&) settings.upgradeNixStorePathUrl);
auto res = getFileTransfer()->download(req);
auto state = std::make_unique<EvalState>(SearchPath{}, store);

6
src/nix/upgrade-nix.md
View file

@ -16,8 +16,10 @@ R""(
# Description
This command upgrades Nix to the stable version declared in Nixpkgs.
This stable version is defined in [nix-fallback-paths.nix](https://github.com/NixOS/nixpkgs/raw/master/nixos/modules/installer/tools/nix-fallback-paths.nix)
This command upgrades Nix to the stable version.
By default, the latest stable version is defined by Nixpkgs, in
[nix-fallback-paths.nix](https://github.com/NixOS/nixpkgs/raw/master/nixos/modules/installer/tools/nix-fallback-paths.nix)
and updated manually. It may not always be the latest tagged release.
By default, it locates the directory containing the `nix` binary in the `$PATH`