From 2b09b74ba617346a0c9c932543e658837ef9e5d2 Mon Sep 17 00:00:00 2001
From: Alan Pearce
Date: Wed, 10 Apr 2024 18:50:02 +0200
Subject: nix: pin nixpkgs to flake input globally and per-user

---
 flake.nix                             |  3 +++
 pin.nix                               | 11 +++++++++++
 system/settings/configuration/nix.nix |  3 +++
 system/settings/darwin.nix            |  3 +++
 user/settings/nix.nix                 |  2 +-
 user/settings/pin.nix                 | 11 -----------
 6 files changed, 21 insertions(+), 12 deletions(-)
 create mode 100644 pin.nix
 delete mode 100644 user/settings/pin.nix

diff --git a/flake.nix b/flake.nix
index b89941a7..9115ef97 100644
--- a/flake.nix
+++ b/flake.nix
@@ -42,6 +42,7 @@
     {
       nixosConfigurations.prefect = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
+        specialArgs = { inherit inputs; };
         modules = [
           ./system/prefect.nix
         ] ++ (with nixos-hardware.nixosModules; [
@@ -54,10 +55,12 @@
       };
       nixosConfigurations.nanopi = nixpkgs.lib.nixosSystem {
         system = utils.lib.system.aarch64-linux;
+        specialArgs = { inherit inputs; };
         modules = [ ./nanopi.nix ];
       };
       darwinConfigurations.mba = darwin.lib.darwinSystem {
         system = utils.lib.system.aarch64-darwin;
+        specialArgs = { inherit inputs; };
         modules = [ ./system/mba.nix ];
       };
       homeConfigurations."alan@mba" = mkHomeConfiguration {
diff --git a/pin.nix b/pin.nix
new file mode 100644
index 00000000..ab7c8b3e
--- /dev/null
+++ b/pin.nix
@@ -0,0 +1,11 @@
+{ inputs, ... }:
+let
+  inherit (inputs) nixpkgs;
+in
+{
+  nix = {
+    registry = {
+      nixpkgs.flake = nixpkgs;
+    };
+  };
+}
diff --git a/system/settings/configuration/nix.nix b/system/settings/configuration/nix.nix
index 6328f32e..4142fa34 100644
--- a/system/settings/configuration/nix.nix
+++ b/system/settings/configuration/nix.nix
@@ -2,6 +2,9 @@
 , pkgs
 , ...
 }: {
+  imports = [
+    ../../../pin.nix
+  ];
   nix = {
     settings = {
       cores = 0;
diff --git a/system/settings/darwin.nix b/system/settings/darwin.nix
index 806fdeb9..460d47bd 100644
--- a/system/settings/darwin.nix
+++ b/system/settings/darwin.nix
@@ -3,6 +3,9 @@
 , lib
 , ...
 }: {
+  imports = [
+    ../../pin.nix
+  ];
   services.nix-daemon = {
     enable = true;
     enableSocketListener = true;
diff --git a/user/settings/nix.nix b/user/settings/nix.nix
index b15f5c5d..ec69d51f 100644
--- a/user/settings/nix.nix
+++ b/user/settings/nix.nix
@@ -3,7 +3,7 @@
 , ...
 }: {
   imports = [
-    ./pin.nix
+    ../../pin.nix
   ];
   nixpkgs.config = import ../config.nix;
   home.packages = with pkgs; [
diff --git a/user/settings/pin.nix b/user/settings/pin.nix
deleted file mode 100644
index ab7c8b3e..00000000
--- a/user/settings/pin.nix
+++ /dev/null
@@ -1,11 +0,0 @@
-{ inputs, ... }:
-let
-  inherit (inputs) nixpkgs;
-in
-{
-  nix = {
-    registry = {
-      nixpkgs.flake = nixpkgs;
-    };
-  };
-}
-- 
cgit 1.4.1