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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
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@ -1084,6 +1084,16 @@ public:
true, // document default true, // document default
Xp::ConfigurableImpureEnv 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 struct CmdUpgradeNix : MixDryRun, StoreCommand
{ {
Path profileDir; Path profileDir;
std::string storePathsUrl = "https://github.com/NixOS/nixpkgs/raw/master/nixos/modules/installer/tools/nix-fallback-paths.nix";
CmdUpgradeNix() CmdUpgradeNix()
{ {
@ -30,7 +29,7 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
.longName = "nix-store-paths-url", .longName = "nix-store-paths-url",
.description = "The URL of the file that contains the store paths of the latest Nix release.", .description = "The URL of the file that contains the store paths of the latest Nix release.",
.labels = {"url"}, .labels = {"url"},
.handler = {&storePathsUrl} .handler = {&(std::string&) settings.upgradeNixStorePathUrl}
}); });
} }
@ -44,7 +43,7 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
std::string description() override 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 std::string doc() override
@ -145,7 +144,7 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
Activity act(*logger, lvlInfo, actUnknown, "querying latest Nix version"); Activity act(*logger, lvlInfo, actUnknown, "querying latest Nix version");
// FIXME: use nixos.org? // FIXME: use nixos.org?
auto req = FileTransferRequest(storePathsUrl); auto req = FileTransferRequest((std::string&) settings.upgradeNixStorePathUrl);
auto res = getFileTransfer()->download(req); auto res = getFileTransfer()->download(req);
auto state = std::make_unique<EvalState>(SearchPath{}, store); auto state = std::make_unique<EvalState>(SearchPath{}, store);

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

@ -16,8 +16,10 @@ R""(
# Description # Description
This command upgrades Nix to the stable version declared in Nixpkgs. This command upgrades Nix to the stable version.
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)
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. and updated manually. It may not always be the latest tagged release.
By default, it locates the directory containing the `nix` binary in the `$PATH` By default, it locates the directory containing the `nix` binary in the `$PATH`