configs/git: add backwards compat for old style config

configs/git.nix

@@ -4,7 +4,7 @@
   programs.git = {
     enable = true;
     lfs.enable = true;
-    config = [
+    config = if isUnstable then [
       { init = { defaultBranch = "main"; }; }
 
       {
@@ -69,7 +69,64 @@
 
       { pull = { rebase = false; }; }
       { include = { path = "~/work/git/gitconfig"; }; }
-    ];
+    ] else {
+      init = { defaultBranch = "main"; };
+
+      user = {
+        name = "Aaron Bieber";
+        email = "aaron@bolddaemon.com";
+        signingKey = if isUnstable then
+          "key::sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAIHrYWbbgBkGcOntDqdMaWVZ9xn+dHM+Ap6s1HSAalL28AAAACHNzaDptYWlu"
+        else
+          "35863350BFEAC101DB1A4AF01F81112D62A9ADCE";
+      };
+
+      branch = { sort = "-committerdate"; };
+
+      alias = {
+        log = "log --color=never";
+        diff = "diff --color=always";
+        pr = ''"!f() { git fetch-pr upstream $1; git checkout pr/$1; }; f"'';
+        fetch-pr =
+          ''"!f() { git fetch $1 refs/pull/$2/head:refs/remotes/pr/$2; }; f"'';
+      };
+
+      push = { default = "current"; };
+
+      gpg = if isUnstable then { format = "ssh"; } else { };
+      commit = if isUnstable then { gpgsign = true; } else { };
+
+      color = {
+        branch = false;
+        interactive = false;
+        log = false;
+        status = false;
+        ui = false;
+      };
+
+      safe = { directory = "/home/qbit/src/nix-conf"; };
+
+      transfer = { fsckobjects = true; };
+      fetch = { fsckobjects = true; };
+      github = { user = "qbit"; };
+
+      url = {
+        "ssh://git@github.com/" = { insteadOf = "https://github.com/"; };
+      };
+
+      sendmail = {
+        smtpserver = "mail.messagingengine.com";
+        smtpuser = "qbit@fastmail.com";
+        smtpauth = "PLAIN";
+        smtpencryption = "tls";
+        smtpserverport = 587;
+        cc = "aaron@bolddaemon.com";
+        confirm = "auto";
+      };
+
+      pull = { rebase = false; };
+      include = { path = "~/work/git/gitconfig"; };
+    };
   };
 }