Make editor function work with flakes

home/fish/config.fish

@@ -1,7 +1,7 @@
 set -gx fish_greeting
 
 function nix
-  if test "$argv[1]" = "develop"
+  if test "$argv[1]" = "develop"; and test (count $argv) -eq 1
     command nix develop -c fish $argv[2..-1]
   else if test "$argv[1]" = "shell"
     env IN_NIX_SHELL=shell nix $argv
@@ -9,6 +9,7 @@ function nix
     command nix $argv
   end
 end
+
 function a
   for arg in $argv
     if string match -q '*/' $arg
@@ -19,13 +20,7 @@ function a
     end
   end
 end
-function y
-  set tmp (mktemp -t "yazi-cwd.XXXXXX")
-  yazi $argv --cwd-file="$tmp"
-  if set cwd (cat -- "$tmp"); and [ -n "$cwd" ]; and [ "$cwd" != "$PWD" ]
-    builtin cd -- "$cwd"
-  end
-end
+
 function g
   if git rev-parse --git-dir >/dev/null 2>&1
     gitui
@@ -33,13 +28,29 @@ function g
     echo "Not inside a Git repository."
   end
 end
+
+function y
+  set tmp (mktemp -t "yazi-cwd.XXXXXX")
+  yazi $argv --cwd-file="$tmp"
+  if set cwd (cat -- "$tmp"); and [ -n "$cwd" ]; and [ "$cwd" != "$PWD" ]
+    builtin cd -- "$cwd"
+  end
+end
+
 function editor
   set pos (cat ~/dotfiles/.pos)
   y $pos
   if test -e ./p.vim
-    nvim -S ./p.vim
+    set cmd nvim -S ./p.vim
   else
-    nvim
+    set cmd nvim
+  end
+  if test -e ./flake.nix
+          and not contains -- "$IN_NIX_SHELL" pure impure
+          and command nix develop --command true 2>/dev/null
+    command nix develop --command $cmd
+  else
+    command $cmd
   end
   echo $PWD > ~/dotfiles/.pos
 end