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Introduce config.me.optimizations.enable to toggle optimizations.

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This is more granular than the buildingIso setting.
This commit is contained in:
Tom Alexander
2025-05-04 15:12:41 -04:00
parent a36ebbf94c
commit c68a6aaa19
9 changed files with 111 additions and 77 deletions
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1
nix/configuration/hosts/odo/default.nix
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@@ -24,6 +24,7 @@
time.timeZone = "America/New_York";
i18n.defaultLocale = "en_US.UTF-8";
me.optimizations.enable = true;
me.secureBoot.enable = true;
# Early KMS

60
nix/configuration/hosts/odo/optimized_build.nix
View File

@@ -10,27 +10,10 @@
config = lib.mkMerge [
{ }
(lib.mkIf (!config.me.buildingIso) {
nix.settings.system-features = lib.mkForce [
"gccarch-znver4"
"gccarch-skylake"
# "gccarch-alderlake" missing WAITPKG
"gccarch-x86-64-v3"
"gccarch-x86-64-v4"
"benchmark"
"big-parallel"
"kvm"
"nixos-test"
];
# Keep ALL dependencies so we can rebuild offline. This DRASTICALLY increase disk usage, but disk space is cheap.
# system.includeBuildDependencies = true;
nix.extraOptions = ''
keep-outputs = true
keep-derivations = true
'';
(lib.mkIf (!config.me.optimizations.enable) {
boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux_6_14;
})
(lib.mkIf (config.me.optimizations.enable) {
nixpkgs.hostPlatform = {
gcc.arch = "znver4";
gcc.tune = "znver4";
@@ -103,8 +86,41 @@
boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux_me;
})
(lib.mkIf (!config.me.buildingIso) {
nix.settings.system-features = lib.mkForce [
"gccarch-znver4"
"gccarch-skylake"
# "gccarch-alderlake" missing WAITPKG
"gccarch-x86-64-v3"
"gccarch-x86-64-v4"
"benchmark"
"big-parallel"
"kvm"
"nixos-test"
];
# Keep ALL dependencies so we can rebuild offline. This DRASTICALLY increase disk usage, but disk space is cheap.
# system.includeBuildDependencies = true;
# This also should enable building offline? TODO: test.
nix.extraOptions = ''
keep-outputs = true
keep-derivations = true
'';
# # building ON
# nixpkgs.localSystem = { system = "aarch64-linux"; };
# # building FOR
# nixpkgs.crossSystem = { system = "aarch64-linux"; };
# nixpkgs.config = {
# replaceStdenv = ({ pkgs }: pkgs.clangStdenv);
# };
# or maybe an overlay
# stdenv = prev.clangStdenv;
})
(lib.mkIf (config.me.buildingIso) {
boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux_6_14;
boot.supportedFilesystems.zfs = true;
})
];