Merge #161

161: Multi-arch support for hosts(nixosConfigurations) r=nrdxp a=Pacman99

fixes #72 

also related, #125 

This allows users to set `nixpkgs.system` to any architecture exported by the nixpkgs flake and nixpkgs.pkgs will be set to that system.

I also added `multiPkgs` as a special arg and made `nixpkgs.pkgs` a default. So if someone wanted to do crossSystem builds or anything else with pkgs, that is also an option(eg. mobile-nixos!!).

Co-authored-by: Pacman99 <pachum99@gmail.com>

flake.nix

@@ -36,48 +36,47 @@
 
       extern = import ./extern { inherit inputs; };
 
-      pkgs' = os.mkPkgs;
+      multiPkgs = os.mkPkgs;
 
-      outputs =
+      outputs = {
-        let
+        nixosConfigurations =
-          system = "x86_64-linux";
+          import ./hosts (nixos.lib.recursiveUpdate inputs {
-          pkgs = pkgs'.${system};
+            inherit multiPkgs extern;
-        in
+            defaultSystem = "x86_64-linux";
-        {
+            lib = nixos.lib.extend (final: prev: {
-          nixosConfigurations =
+              dev = self.lib;
-            import ./hosts (nixos.lib.recursiveUpdate inputs {
-              inherit pkgs system extern;
-              inherit (pkgs) lib;
             });
+          });
 
-          nixosModules =
+        nixosModules =
-            let moduleList = import ./modules/module-list.nix;
+          let moduleList = import ./modules/module-list.nix;
-            in lib.pathsToImportedAttrs moduleList;
+          in lib.pathsToImportedAttrs moduleList;
 
-          overlay = import ./pkgs;
+        overlay = import ./pkgs;
-          overlays = lib.pathsToImportedAttrs (lib.pathsIn ./overlays);
+        overlays = lib.pathsToImportedAttrs (lib.pathsIn ./overlays);
 
-          lib = import ./lib { inherit nixos pkgs self inputs; };
+        lib = import ./lib { inherit nixos self inputs; };
 
-          templates.flk.path = ./.;
+        templates.flk.path = ./.;
-          templates.flk.description = "flk template";
+        templates.flk.description = "flk template";
-          defaultTemplate = self.templates.flk;
+        defaultTemplate = self.templates.flk;
 
-          deploy.nodes = os.mkNodes deploy self.nixosConfigurations;
+        deploy.nodes = os.mkNodes deploy self.nixosConfigurations;
-
+      };
-          checks =
-            let
-              tests = import ./tests { inherit self pkgs; };
-              deployChecks = builtins.mapAttrs
-                (system: deployLib: deployLib.deployChecks self.deploy)
-                deploy.lib;
-            in
-            nixos.lib.recursiveUpdate tests deployChecks;
-        };
 
       systemOutputs = utils.lib.eachDefaultSystem (system:
-        let pkgs = pkgs'.${system}; in
+        let pkgs = multiPkgs.${system}; in
         {
+          checks =
+            let
+              tests = nixos.lib.optionalAttrs (system == "x86_64-linux")
+                (import ./tests { inherit self pkgs; });
+              deployHosts = nixos.lib.filterAttrs
+                (n: _: self.nixosConfigurations.${n}.config.nixpkgs.system == system) self.deploy.nodes;
+              deployChecks = deploy.lib.${system}.deployChecks { nodes = deployHosts; };
+            in
+            nixos.lib.recursiveUpdate tests deployChecks;
+
           packages = utils.lib.flattenTreeSystem system
             (os.mkPackages { inherit pkgs; });
 

hosts/README.md

@@ -25,6 +25,10 @@ that you intend to use on your machine.
 Additionally, this is the perfect place to import anything you might need from
 the [nixos-hardware][nixos-hardware] repository.
 
+> ##### _Note:_
+> Set `nixpkgs.system` to the architecture of this host, default is "x86_64-linux". 
+> Keep in mind that not all packages are available for all architectures.
+
 ## Example
 
 hosts/librem.nix:

hosts/default.nix

@@ -3,9 +3,9 @@
 , lib
 , nixos
 , override
-, pkgs
+, multiPkgs
 , self
-, system
+, defaultSystem
 , ...
 }:
 let
@@ -27,7 +27,7 @@ let
           modules;
       };
 
-    global = {
+    global = { config, ... }: {
       home-manager.useGlobalPkgs = true;
       home-manager.useUserPackages = true;
 
@@ -39,7 +39,7 @@ let
         "home-manager=${home}"
       ];
 
-      nixpkgs = { inherit pkgs; };
+      nixpkgs.pkgs = lib.mkDefault multiPkgs.${config.nixpkgs.system};
 
       nix.registry = {
         devos.flake = self;
@@ -79,7 +79,8 @@ let
       };
     in
     dev.os.devosSystem {
-      inherit system specialArgs;
+      inherit specialArgs;
+      system = defaultSystem;
       modules = modules // { inherit local lib; };
     };
 

lib/default.nix

@@ -1,4 +1,4 @@
-args@{ nixos, pkgs, self, ... }:
+args@{ nixos, self, ... }:
 let inherit (nixos) lib; in
 lib.makeExtensible (final:
   let callLibs = file: import file

tests/default.nix

@@ -59,45 +59,44 @@ let
     nixosTesting.makeTest calledTest;
 in
 {
-  x86_64-linux = {
+  profilesTest = mkTest {
-    profilesTest = mkTest {
+    name = "profiles";
-      name = "profiles";
 
-      machine = { suites, ... }: {
+    machine = { suites, ... }: {
-        imports = suites.allProfiles ++ suites.allUsers;
+      imports = suites.allProfiles ++ suites.allUsers;
-      };
-
-      testScript = ''
-        machine.systemctl("is-system-running --wait")
-      '';
     };
 
-    libTests = pkgs.runCommandNoCC "devos-lib-tests"
+    testScript = ''
-      {
+      machine.systemctl("is-system-running --wait")
-        buildInputs = [
-          pkgs.nix
-          (
-            let tests = import ./lib.nix { inherit self pkgs; };
-            in
-            if tests == [ ]
-            then null
-            else throw (builtins.toJSON tests)
-          )
-        ];
-      } ''
-      datadir="${pkgs.nix}/share"
-      export TEST_ROOT=$(pwd)/test-tmp
-      export NIX_BUILD_HOOK=
-      export NIX_CONF_DIR=$TEST_ROOT/etc
-      export NIX_LOCALSTATE_DIR=$TEST_ROOT/var
-      export NIX_LOG_DIR=$TEST_ROOT/var/log/nix
-      export NIX_STATE_DIR=$TEST_ROOT/var/nix
-      export NIX_STORE_DIR=$TEST_ROOT/store
-      export PAGER=cat
-      cacheDir=$TEST_ROOT/binary-cache
-      nix-store --init
-
-      touch $out
     '';
   };
+
+  libTests = pkgs.runCommandNoCC "devos-lib-tests"
+    {
+      buildInputs = [
+        pkgs.nix
+        (
+          let tests = import ./lib.nix { inherit self pkgs; };
+          in
+          if tests == [ ]
+          then null
+          else throw (builtins.toJSON tests)
+        )
+      ];
+    } ''
+    datadir="${pkgs.nix}/share"
+    export TEST_ROOT=$(pwd)/test-tmp
+    export NIX_BUILD_HOOK=
+    export NIX_CONF_DIR=$TEST_ROOT/etc
+    export NIX_LOCALSTATE_DIR=$TEST_ROOT/var
+    export NIX_LOG_DIR=$TEST_ROOT/var/log/nix
+    export NIX_STATE_DIR=$TEST_ROOT/var/nix
+    export NIX_STORE_DIR=$TEST_ROOT/store
+    export PAGER=cat
+    cacheDir=$TEST_ROOT/binary-cache
+    nix-store --init
+
+    touch $out
+  '';
 }
+