Add 'old-conf/' from commit '62a64a79a8'

git-subtree-dir: old-conf
git-subtree-mainline: 4667974392
git-subtree-split: 62a64a79a8

old-conf/hosts/theseus/work.nix

@@ -0,0 +1,10 @@
+{ config, pkgs, lib, ... }: {
+   home.packages = [
+    # pkgs.dotnet-sdk_8
+    pkgs.unstable.dotnet-sdk_9
+    pkgs.unstable.jetbrains.rider
+    # pkgs.jetbrains.datagrip
+    (pkgs.unstable.firefox-devedition.overrideAttrs (super: self: { meta.priority = 1; }))
+  ];
+  
+}