machines + modules: Fix Nix option definitions

Most of the options in nix.conf are now exposed as a submodule with a
freeform type and since that change[1] got introduced, we get a bunch of
warnings during machine evaluation:

  trace: warning: The option `nix.useSandbox' defined in `...' has been renamed to `nix.settings.sandbox'.
  trace: warning: The option `nix.maxJobs' defined in `...' has been renamed to `nix.settings.max-jobs'.
  trace: warning: The option `nix.buildCores' defined in `...' has been renamed to `nix.settings.cores'.

To shut them up, I went through all machines and modules and renamed the
remaining options that were not renamed back then when @devhell did some
renames in a0297bf921399c3243dcca99626d8697f0735abe.

This was done by looking through the output of:

  $ git grep -A 10 '\<nix\(\.\| *=\)' machines modules

After that I tested the contents of the nix.conf of all the machines
against the changes this commit introduced via the following command:

  $ nix-build --no-out-link -E '
      with import <nixpkgs/lib>;
      map (m: m.eval.config.environment.etc."nix/nix.conf".source)
          (collect (m: m ? eval) (import ./machines))
    '

I've sorted the resulting nix.conf files and diffed on that result and
the only difference that showed up was the following:

   allowed-users = *
  -auto-optimise-store = false
   auto-optimise-store = true
   builders-use-substitutes = true
   cores = 0

This is because the previous way to generate the config was by
concatenating strings whereas the new way works on an attribute set, so
we get deduplication by design.

[1]: https://github.com/NixOS/nixpkgs/pull/139075

Signed-off-by: aszlig <aszlig@nix.build>
Cc: @devhell
Cc: @Profpatsch
Cc: @sternenseemann

3 files changed, 12 insertions, 20 deletions

diff --git a/modules/user/aszlig/profiles/base.nix b/modules/user/aszlig/profiles/base.nix
index d5e589d1..681a044a 100644
--- a/modules/user/aszlig/profiles/base.nix
+++ b/modules/user/aszlig/profiles/base.nix
@@ -9,14 +9,11 @@ in {
   };
 
   config = lib.mkIf cfg.enable {
-    nix = {
-      useSandbox = true;
-      readOnlyStore = true;
-      buildCores = 0;
-      extraOptions = ''
-        auto-optimise-store = true
-        experimental-features = nix-command flakes
-      '';
+    nix.readOnlyStore = true;
+    nix.settings = {
+      sandbox = true;
+      auto-optimise-store = true;
+      experimental-features = [ "nix-command" "flakes" ];
     };
 
     users.defaultUserShell = "/var/run/current-system/sw/bin/zsh";
diff --git a/modules/user/aszlig/profiles/managed.nix b/modules/user/aszlig/profiles/managed.nix
index dd4bcd58..afb19a2f 100644
--- a/modules/user/aszlig/profiles/managed.nix
+++ b/modules/user/aszlig/profiles/managed.nix
@@ -88,10 +88,9 @@ in {
     networking.firewall.enable = false;
     networking.networkmanager.enable = true;
 
-    nix.autoOptimiseStore = true;
-    nix.buildCores = 0;
     nix.readOnlyStore = true;
-    nix.useSandbox = true;
+    nix.settings.sandbox = true;
+    nix.settings.auto-optimise-store = true;
 
     nixpkgs.config.pulseaudio = true;
 
diff --git a/modules/user/devhell/profiles/base.nix b/modules/user/devhell/profiles/base.nix
index 41f5e7cd..e5803fd6 100644
--- a/modules/user/devhell/profiles/base.nix
+++ b/modules/user/devhell/profiles/base.nix
@@ -14,15 +14,11 @@ in {
       cleanTmpDir = true;
     };
 
-    nix = {
-      settings = {
-        sandbox = true;
-        cores = 0;
-      };
-      extraOptions = ''
-        auto-optimise-store = true
-        experimental-features = nix-command flakes
-      '';
+    nix.settings = {
+      sandbox = true;
+      cores = 0;
+      auto-optimise-store = true;
+      experimental-features = [ "nix-command" "flakes" ];
     };
 
     time = {