git: use delta for diffs

modules/terminal-life/default.nix

@@ -31,6 +31,7 @@ in {
       asciinema
       bat
       blesh
+      delta
       eza
       fd
       jump

users/teutat3s/.config/git/config.nix

@@ -17,7 +17,25 @@ in
       smudge = git-lfs smudge -- %f
       process = git-lfs filter-process
       required = true
+    [core]
+        pager = delta
+    [interactive]
+        diffFilter = delta --color-only
+    [delta]
+        navigate = true    # use n and N to move between diff sections
+        line-numbers = true
+        syntax-theme = base16
+        minus-style = "red dim"
+        plus-style = "green dim"
+        zero-style = "white dim"
 
+        # delta detects terminal colors automatically; set one of these to disable auto-detection
+        # dark = true
+        # light = true
+    [merge]
+        conflictstyle = diff3
+    [diff]
+        colorMoved = default
     [includeIf "gitdir:~/CodeRoom/greenbaum.cloud/"]
       path = ~/.config/git/config_greenbaum.cloud