Simplify flake and expose host pkgs

The configuration of the machines is now moved to m/

common/overlays.nix

@@ -1,9 +0,0 @@
-{ options, ... }:
-
-{
-  nix.nixPath =
-    # Prepend default nixPath values.
-    options.nix.nixPath.default ++
-    # Append our nixpkgs-overlays.
-    [ "nixpkgs-overlays=${../overlays-compat}" ];
-}

flake.nix

@@ -6,97 +6,22 @@
     bscpkgs.url = "git+https://pm.bsc.es/gitlab/rarias/bscpkgs.git";
   };
 
-  outputs = { self, nixpkgs, agenix, bscpkgs, ... }: {
+  outputs = { self, nixpkgs, agenix, bscpkgs, ... }:
+let
+  mkConf = name: nixpkgs.lib.nixosSystem {
+    system = "x86_64-linux";
+    specialArgs = { inherit nixpkgs bscpkgs agenix; theFlake = self; };
+    modules = [ "${self.outPath}/m/${name}/configuration.nix" ];
+  };
+in
+  {
     nixosConfigurations = {
-      xeon01 = nixpkgs.lib.nixosSystem {
-        system = "x86_64-linux";
-        modules = [
-          ( {options, ...}: {
-            # Sel the nixos-config path to the one of the current flake
-            nixpkgs.overlays = [ bscpkgs.bscOverlay ];
-            nix.nixPath = [
-                "nixpkgs=${nixpkgs}"
-                "bscpkgs=${bscpkgs}"
-                "nixos-config=${self.outPath}/xeon01/configuration.nix"
-                "nixpkgs-overlays=${self.outPath}/overlays-compat"
-            ];
-            nix.registry.nixpkgs.flake = nixpkgs;
-            nix.registry.bscpkgs.flake = bscpkgs;
-            system.configurationRevision =
-              if self ? rev
-              then self.rev
-              else throw ("Refusing to build from a dirty Git tree!");
-          })
-          ./xeon01/configuration.nix
-        ];
-      };
-      xeon02 = nixpkgs.lib.nixosSystem {
-        system = "x86_64-linux";
-        modules = [
-          ( {options, ...}: {
-            # Sel the nixos-config path to the one of the current flake
-            nixpkgs.overlays = [ bscpkgs.bscOverlay ];
-            nix.nixPath = [
-                "nixpkgs=${nixpkgs}"
-                "bscpkgs=${bscpkgs}"
-                "nixos-config=${self.outPath}/xeon02/configuration.nix"
-                "nixpkgs-overlays=${self.outPath}/overlays-compat"
-            ];
-            nix.registry.nixpkgs.flake = nixpkgs;
-            nix.registry.bscpkgs.flake = bscpkgs;
-            system.configurationRevision =
-              if self ? rev
-              then self.rev
-              else throw ("Refusing to build from a dirty Git tree!");
-          })
-          ./xeon02/configuration.nix
-        ];
-      };
-      hut = nixpkgs.lib.nixosSystem {
-        system = "x86_64-linux";
-        modules = [
-          ( {options, ...}: {
-            # Sel the nixos-config path to the one of the current flake
-            nixpkgs.overlays = [ bscpkgs.bscOverlay ];
-            nix.nixPath = [
-                "nixpkgs=${nixpkgs}"
-                "bscpkgs=${bscpkgs}"
-                "nixos-config=${self.outPath}/hut/configuration.nix"
-                "nixpkgs-overlays=${self.outPath}/overlays-compat"
-            ];
-            nix.registry.nixpkgs.flake = nixpkgs;
-            nix.registry.bscpkgs.flake = bscpkgs;
-            system.configurationRevision =
-              if self ? rev
-              then self.rev
-              else throw ("Refusing to build from a dirty Git tree!");
-          })
-          agenix.nixosModules.default
-          ./hut/configuration.nix
-        ];
-      };
-      xeon08 = nixpkgs.lib.nixosSystem {
-        system = "x86_64-linux";
-        modules = [
-          ( {options, ...}: {
-            # Sel the nixos-config path to the one of the current flake
-            nixpkgs.overlays = [ bscpkgs.bscOverlay ];
-            nix.nixPath = [
-                "nixpkgs=${nixpkgs}"
-                "bscpkgs=${bscpkgs}"
-                "nixos-config=${self.outPath}/xeon08/configuration.nix"
-                "nixpkgs-overlays=${self.outPath}/overlays-compat"
-            ];
-            nix.registry.nixpkgs.flake = nixpkgs;
-            nix.registry.bscpkgs.flake = bscpkgs;
-            system.configurationRevision =
-              if self ? rev
-              then self.rev
-              else throw ("Refusing to build from a dirty Git tree!");
-          })
-          ./xeon08/configuration.nix
-        ];
-      };
+      hut     = mkConf "hut";
+      owl1    = mkConf "owl1";
+      owl2    = mkConf "owl2";
+      xeon08  = mkConf "xeon08";
     };
+
+    packages.x86_64-linux.hut = self.nixosConfigurations.hut.pkgs;
   };
 }

m/common/main.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, pkgs, nixpkgs, bscpkgs, agenix, theFlake, ... }:
 
 {
   imports = [
@@ -11,6 +11,23 @@
     ./users.nix
   ];
 
+  nixpkgs.overlays = [ bscpkgs.bscOverlay ];
+
+  nix.nixPath = [
+    "nixpkgs=${nixpkgs}"
+    "bscpkgs=${bscpkgs}"
+    "jungle=${theFlake.outPath}"
+  ];
+
+  nix.registry.nixpkgs.flake = nixpkgs;
+  nix.registry.bscpkgs.flake = bscpkgs;
+  nix.registry.jungle.flake = theFlake;
+
+  system.configurationRevision =
+    if theFlake ? rev
+    then theFlake.rev
+    else throw ("Refusing to build from a dirty Git tree!");
+
   environment.systemPackages = with pkgs; [
     vim wget git htop tmux pciutils tcpdump ripgrep nix-index nixos-option
     nix-diff ipmitool freeipmi ethtool lm_sensors ix cmake gnumake file tree

m/common/net.nix

@@ -43,12 +43,12 @@
       10.0.40.143             oss02-ipmi0
       
       # Node Entry for node: xeon01 (ID=15)
-      10.0.40.1               xeon01 xeon01-eth0
+      10.0.40.1               xeon01 xeon01-eth0 owl1
       10.0.42.1               xeon01-ib0
       10.0.40.101             xeon01-ipmi0
       
       # Node Entry for node: xeon02 (ID=16)
-      10.0.40.2               xeon02 xeon02-eth0
+      10.0.40.2               xeon02 xeon02-eth0 owl2
       10.0.42.2               xeon02-ib0
       10.0.40.102             xeon02-ipmi0
       

m/common/slurm.nix

@@ -6,7 +6,8 @@
     controlMachine = "hut";
     clusterName = "owl";
     nodeName = [
-      "xeon[01-02,07]  Sockets=2 CoresPerSocket=14 ThreadsPerCore=2 Feature=xeon"
+      "owl[1,2]  Sockets=2 CoresPerSocket=14 ThreadsPerCore=2 Feature=owl"
+      "hut       Sockets=2 CoresPerSocket=14 ThreadsPerCore=2"
     ];
     extraConfig = ''
       MpiDefault=pmix

m/hut/configuration.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, pkgs, agenix, ... }:
 
 {
   imports = [
@@ -8,6 +8,7 @@
     ./monitoring.nix
     ./nfs.nix
     ./slurm-daemon.nix
+    agenix.nixosModules.default
   ];
 
   # Select the this using the ID to avoid mismatches

overlays-compat/overlays.nix

@@ -1,8 +0,0 @@
-self: super:
-with super.lib;
-let
-  # Load the system config and get the `nixpkgs.overlays` option
-  overlays = (import <nixpkgs/nixos> { }).config.nixpkgs.overlays;
-in
-  # Apply all overlays to the input of the current "main" overlay
-  foldl' (flip extends) (_: super) overlays self