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https://github.com/NixOS/nix
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Merge d2227af71d into 42ea2724a8
This commit is contained in:
Robert Hensing
GitHub
commit
59efeaf2dc
2 changed files with 203 additions and 22 deletions
210
flake.nix
210
flake.nix
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@ -131,31 +131,107 @@
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}
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);
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overlayFor =
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getStdenv: final: prev:
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/**
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Produce the `nixComponents` and `nixDependencies` package sets (scopes) for
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a given `pkgs` and `getStdenv`.
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*/
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packageSetsFor =
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let
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stdenv = getStdenv final;
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in
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/**
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Removes a prefix from the attribute names of a set of splices.
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This is a completely uninteresting and exists for compatibility only.
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Example:
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```nix
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renameSplicesFrom "pkgs" { pkgsBuildBuild = ...; ... }
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=> { buildBuild = ...; ... }
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```
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*/
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renameSplicesFrom = prefix: x: {
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buildBuild = x."${prefix}BuildBuild";
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buildHost = x."${prefix}BuildHost";
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buildTarget = x."${prefix}BuildTarget";
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hostHost = x."${prefix}HostHost";
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hostTarget = x."${prefix}HostTarget";
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targetTarget = x."${prefix}TargetTarget";
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};
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/**
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Adds a prefix to the attribute names of a set of splices.
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This is a completely uninteresting and exists for compatibility only.
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Example:
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```nix
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renameSplicesTo "self" { buildBuild = ...; ... }
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=> { selfBuildBuild = ...; ... }
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```
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*/
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renameSplicesTo = prefix: x: {
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"${prefix}BuildBuild" = x.buildBuild;
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"${prefix}BuildHost" = x.buildHost;
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"${prefix}BuildTarget" = x.buildTarget;
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"${prefix}HostHost" = x.hostHost;
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"${prefix}HostTarget" = x.hostTarget;
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"${prefix}TargetTarget" = x.targetTarget;
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};
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/**
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Takes a function `f` and returns a function that applies `f` pointwise to each splice.
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Example:
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```nix
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mapSplices (x: x * 10) { buildBuild = 1; buildHost = 2; ... }
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=> { buildBuild = 10; buildHost = 20; ... }
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```
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*/
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mapSplices =
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f:
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{
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nixStable = prev.nix;
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buildBuild,
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buildHost,
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buildTarget,
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hostHost,
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hostTarget,
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targetTarget,
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}:
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{
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buildBuild = f buildBuild;
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buildHost = f buildHost;
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buildTarget = f buildTarget;
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hostHost = f hostHost;
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hostTarget = f hostTarget;
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targetTarget = f targetTarget;
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};
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in
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args@{
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pkgs,
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getStdenv ? pkgs: pkgs.stdenv,
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}:
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let
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nixComponentsSplices = mapSplices (
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pkgs': (packageSetsFor (args // { pkgs = pkgs'; })).nixComponents
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) (renameSplicesFrom "pkgs" pkgs);
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nixDependenciesSplices = mapSplices (
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pkgs': (packageSetsFor (args // { pkgs = pkgs'; })).nixDependencies
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) (renameSplicesFrom "pkgs" pkgs);
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# A new scope, so that we can use `callPackage` to inject our own interdependencies
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# without "polluting" the top level "`pkgs`" attrset.
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# This also has the benefit of providing us with a distinct set of packages
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# we can iterate over.
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# The `2` suffix is here because otherwise it interferes with `nixVersions.latest`, which is used in daemon compat tests.
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nixComponents2 =
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nixComponents =
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lib.makeScopeWithSplicing'
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{
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inherit (final) splicePackages;
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inherit (final.nixDependencies2) newScope;
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inherit (pkgs) splicePackages;
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inherit (nixDependencies) newScope;
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}
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{
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otherSplices = final.generateSplicesForMkScope "nixComponents2";
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otherSplices = renameSplicesTo "self" nixComponentsSplices;
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f = import ./packaging/components.nix {
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inherit (final) lib;
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inherit (pkgs) lib;
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inherit officialRelease;
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pkgs = final;
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inherit pkgs;
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src = self;
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maintainers = [ ];
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};
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@ -163,29 +239,71 @@
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# The dependencies are in their own scope, so that they don't have to be
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# in Nixpkgs top level `pkgs` or `nixComponents2`.
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# The `2` suffix is here because otherwise it interferes with `nixVersions.latest`, which is used in daemon compat tests.
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nixDependencies2 =
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nixDependencies =
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lib.makeScopeWithSplicing'
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{
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inherit (final) splicePackages;
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inherit (final) newScope; # layered directly on pkgs, unlike nixComponents2 above
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inherit (pkgs) splicePackages;
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inherit (pkgs) newScope; # layered directly on pkgs, unlike nixComponents2 above
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}
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{
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otherSplices = final.generateSplicesForMkScope "nixDependencies2";
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otherSplices = renameSplicesTo "self" nixDependenciesSplices;
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f = import ./packaging/dependencies.nix {
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inherit inputs stdenv;
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inherit inputs pkgs;
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stdenv = getStdenv pkgs;
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};
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};
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# If the package set is largely empty, we should(?) return empty sets
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# This is what most package sets in Nixpkgs do. Otherwise, we get
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# an error message that indicates that some stdenv attribute is missing,
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# and indeed it will be missing, as seemingly `pkgsTargetTarget` is
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# very incomplete.
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fixup = lib.mapAttrs (k: v: if !(pkgs ? nix) then { } else v);
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in
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fixup {
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inherit nixDependencies;
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inherit nixComponents;
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};
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overlayFor =
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getStdenv: final: prev:
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let
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packageSets = packageSetsFor {
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inherit getStdenv;
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pkgs = final;
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};
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};
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in
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{
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nixStable = prev.nix;
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# The `2` suffix is here because otherwise it interferes with `nixVersions.latest`, which is used in daemon compat tests.
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nixComponents2 = packageSets.nixComponents;
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# The dependencies are in their own scope, so that they don't have to be
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# in Nixpkgs top level `pkgs` or `nixComponents2`.
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# The `2` suffix is here because otherwise it interferes with `nixVersions.latest`, which is used in daemon compat tests.
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nixDependencies2 = packageSets.nixDependencies;
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nix = final.nixComponents2.nix-cli;
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};
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in
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{
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# A Nixpkgs overlay that overrides the 'nix' and
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# 'nix-perl-bindings' packages.
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overlays.default = overlayFor (p: p.stdenv);
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overlays.internal = overlayFor (p: p.stdenv);
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/**
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A Nixpkgs overlay that sets `nix` to something like `packages.<system>.nix-everything`,
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except dependencies aren't taken from (flake) `nix.inputs.nixpkgs`, but from the Nixpkgs packages
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where the overlay is used.
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*/
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overlays.default =
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final: prev:
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let
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packageSets = packageSetsFor { pkgs = final; };
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in
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{
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nix = packageSets.nixComponents.nix-everything;
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};
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hydraJobs = import ./packaging/hydra.nix {
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inherit
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@ -465,5 +583,53 @@
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default = self.devShells.${system}.native;
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}
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);
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lib = {
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/**
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Creates a package set for a given Nixpkgs instance and stdenv.
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# Inputs
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- `pkgs`: The Nixpkgs instance to use.
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- `getStdenv`: _Optional_ A function that takes a package set and returns the stdenv to use.
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This needs to be a function in order to support cross compilation - the `pkgs` passed to `getStdenv` can be `pkgsBuildHost` or any other variation needed.
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# Outputs
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The return value is a fresh Nixpkgs scope containing all the packages that are defined in the Nix repository,
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as well as some internals and parameters, which may be subject to change.
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# Example
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```console
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nix repl> :lf NixOS/nix
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nix-repl> ps = lib.makeComponents { pkgs = import inputs.nixpkgs { crossSystem = "riscv64-linux"; }; }
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nix-repl> ps
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{
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appendPatches = «lambda appendPatches @ ...»;
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callPackage = «lambda callPackageWith @ ...»;
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overrideAllMesonComponents = «lambda overrideSource @ ...»;
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overrideSource = «lambda overrideSource @ ...»;
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# ...
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nix-everything
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# ...
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nix-store
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nix-store-c
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# ...
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}
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```
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*/
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makeComponents =
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{
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pkgs,
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getStdenv ? pkgs: pkgs.stdenv,
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}:
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let
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packageSets = packageSetsFor { inherit getStdenv pkgs; };
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in
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packageSets.nixComponents;
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};
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};
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}
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@ -365,18 +365,33 @@ in
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nix-cmd = callPackage ../src/libcmd/package.nix { };
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/**
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The Nix command line interface. Note that this does not include its tests, whereas `nix-everything` does.
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*/
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nix-cli = callPackage ../src/nix/package.nix { version = fineVersion; };
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nix-functional-tests = callPackage ../tests/functional/package.nix {
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version = fineVersion;
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};
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/**
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The manual as would be published on https://nix.dev/reference/nix-manual
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*/
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nix-manual = callPackage ../doc/manual/package.nix { version = fineVersion; };
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/**
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Doxygen pages for C++ code
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*/
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nix-internal-api-docs = callPackage ../src/internal-api-docs/package.nix { version = fineVersion; };
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/**
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Doxygen pages for the public C API
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*/
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nix-external-api-docs = callPackage ../src/external-api-docs/package.nix { version = fineVersion; };
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nix-perl-bindings = callPackage ../src/perl/package.nix { };
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/**
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Combined package that has the CLI, libraries, and (assuming non-cross, no overrides) it requires that all tests succeed.
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*/
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nix-everything = callPackage ../packaging/everything.nix { } // {
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# Note: no `passthru.overrideAllMesonComponents` etc
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# This would propagate into `nix.overrideAttrs f`, but then discard
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