Expose packages for arm and riscv64 in flake

flake.nix

@@ -5,19 +5,14 @@
 
   outputs = { self, nixpkgs, ... }:
 let
+  forAllSystems = nixpkgs.lib.genAttrs [ "x86_64-linux" "aarch64-linux" "armv6l-linux" "armv7l-linux" "i686-linux" "riscv64-linux" ];
+
   mkConf = name: nixpkgs.lib.nixosSystem {
     system = "x86_64-linux";
     specialArgs = { inherit nixpkgs; theFlake = self; };
     modules = [ "${self.outPath}/m/${name}/configuration.nix" ];
   };
-  # For now we only support x86
-  system = "x86_64-linux";
-  pkgs = import nixpkgs {
-    inherit system;
-    overlays = [ self.overlays.default ];
-    config.allowUnfree = true;
-  };
-in
+  in
   {
     nixosConfigurations = {
       hut     = mkConf "hut";
@@ -38,9 +33,15 @@ in
     overlays.default = self.bscOverlay;
 
     # full nixpkgs with our overlay applied
-    legacyPackages.${system} = pkgs;
+    legacyPackages = forAllSystems (system:
+      import nixpkgs {
+          inherit system;
+          overlays = [ self.overlays.default ];
+          config.allowUnfree = true;
+        }
+    );
 
-    hydraJobs = self.legacyPackages.${system}.bsc.hydraJobs;
+    hydraJobs = self.legacyPackages.x86_64-linux.bsc.hydraJobs;
 
     # propagate nixpkgs lib, so we can do bscpkgs.lib
     lib = nixpkgs.lib // {

pkgs/nix-portable/default.nix

@@ -19,6 +19,16 @@ with builtins;
   compression ? "zstd -19 -T0",
   lib ? pkgs.lib,
   pkgs ? import <nixpkgs> {},
+
+  # pkgs set from the host system (just for eval in installDynamic)
+  pkgsHost ?
+    if stdenv.hostPlatform == stdenv.buildPlatform then
+      pkgs
+    else
+      import pkgs.path {
+        system = pkgs.stdenv.hostPlatform.system;
+      },
+
   # hardcode executable to run. Useful when creating a bundle.
   bundledPackage ? null,
 
@@ -86,9 +96,9 @@ let
   '';
 
   installDynamic = pkgname: let
-    out = pkgs.${pkgname}.out;
+    out = pkgsHost.${pkgname}.outPath;
   in ''
-    if [ ! -e \$store${lib.removePrefix "/nix/store" pkgs.${pkgname}.out} ] ; then
+    if [ ! -e \$store${lib.removePrefix "/nix/store" out} ] ; then
       debug "Installing ${pkgname}"
       \$run \$store${lib.removePrefix "/nix/store" nix}/bin/nix build --impure --no-link --expr "
         (import ${nixpkgsSrc} {}).${pkgname}.out
@@ -254,7 +264,7 @@ let
     fi
 
     # Override $SHELL with nix bashInteractive
-    export SHELL="${pkgs.bashInteractive.out}/bin/bash"
+    export SHELL="${pkgsHost.bashInteractive.out}/bin/bash"
     export PS1="\n\[\033[1;32m\][\[\e]0;\u@\h: \w\a\]\u@\h:\w]\$\[\033[0m\] "
 
     # unset bash function aliases