hm cleanup

home-manager/shared/programs/shell/fish/functions.nix

@@ -0,0 +1,60 @@
+{
+  nix-shell = {
+    wraps = "nix-shell";
+    body = ''
+      command nix-shell $argv --command "fish"
+    '';
+  };
+  nix = {
+    wraps = "nix";
+    body = ''
+      if status is-interactive
+        and test (count $argv) = 1 -a "$argv[1]" = develop
+          nix develop --command (status fish-path)
+      else
+        command nix $argv
+      end
+    '';
+  };
+  fish_jj_prompt = {
+    body = ''
+      if not command -sq jj
+          return 1
+      end
+
+      if not jj root &>/dev/null
+          return 1
+      end
+
+      # Generate prompt
+      set -l info "$(
+          jj log --ignore-working-copy --no-graph --color=always --revisions=@ --template "
+              separate(
+                  ' ',
+                  self.change_id().shortest(),
+                  bookmarks.join(', '),
+                  if(conflict, label('conflict', '×')),
+                  if(empty, label('empty', '(empty)')),
+                  if(divergent, label('divergent', '(divergent)')),
+                  if(hidden, label('hidden', '(hidden)')),
+              )
+          "
+      )"
+      or return 1
+
+      if test -n $info
+          printf ' (jj: %s)' $info
+      else
+          return 1
+      end
+    '';
+  };
+  fish_vcs_prompt = {
+    body = ''
+      fish_jj_prompt $argv
+      or fish_git_prompt $argv
+      or fish_hg_prompt $argv
+      or fish_fossil_prompt $argv
+    '';
+  };
+}