refactor(python): use dedicated runtime environments

systems/brain/services/heater.nix

@@ -4,6 +4,20 @@
   ...
 }:
 {
+  nixpkgs.overlays = [
+    (final: _prev: {
+      heater_python = final.python314.withPackages (
+        ps: with ps; [
+          fastapi
+          pydantic
+          tinytuya
+          typer
+          uvicorn
+        ]
+      );
+    })
+  ];
+
   networking.firewall.allowedTCPPorts = [ 8124 ];
 
   systemd.services.heater-api = {
@@ -17,7 +31,7 @@
 
     serviceConfig = {
       Type = "simple";
-      ExecStart = "${pkgs.my_python}/bin/python -m python.heater.main --host 0.0.0.0 --port 8124";
+      ExecStart = "${pkgs.heater_python}/bin/python -m python.heater.main --host 0.0.0.0 --port 8124";
       EnvironmentFile = "/etc/heater.env";
       Restart = "on-failure";
       RestartSec = "5s";

systems/jeeves/runners/nix_builder.nix

@@ -23,6 +23,13 @@ let
       ...
     }:
     let
+      giteaAutomationPython = pkgs.python314.withPackages (
+        ps: with ps; [
+          httpx
+          pydantic
+          typer
+        ]
+      );
       runnerConfigFile = (pkgs.formats.yaml { }).generate "gitea-runner.yaml" { };
       registerRunner = pkgs.writeShellApplication {
         name = "register-gitea-runner";
@@ -96,8 +103,8 @@ let
           curl
           gawk
           gitMinimal
+          giteaAutomationPython
           gnused
-          my_python
           nix
           nixfmt
           nixos-rebuild

systems/jeeves/services/gems.nix

@@ -8,6 +8,22 @@ let
   stateDir = "${vars.services}/gems";
 in
 {
+  nixpkgs.overlays = [
+    (final: _prev: {
+      gems_python = final.python314.withPackages (
+        ps: with ps; [
+          fastapi
+          jinja2
+          pydantic
+          pydantic-settings
+          python-multipart
+          typer
+          uvicorn
+        ]
+      );
+    })
+  ];
+
   users.groups.gems = { };
   users.users.gems = {
     isSystemUser = true;
@@ -36,7 +52,7 @@ in
       Type = "simple";
       User = "gems";
       Group = "gems";
-      ExecStart = "${pkgs.my_python}/bin/python -m python.gems.main --host 0.0.0.0 --port 8002";
+      ExecStart = "${pkgs.gems_python}/bin/python -m python.gems.main --host 0.0.0.0 --port 8002";
       Restart = "on-failure";
       RestartSec = "5s";
       StandardOutput = "journal";