fixed weird color shit in oh-my-posh and changed nixos wivrn stuff

.config/oh-my-posh/zen.toml

@@ -37,14 +37,12 @@ template = '''
 	[[blocks.segments]] # Python venv
   type = 'text'
   style = 'plain'
-  foreground = 'yellow'
-  template = '{{ if .Env.VIRTUAL_ENV }}🐍 venv <grey>|</> {{ end }}'
+  template = '{{ if .Env.VIRTUAL_ENV }}<yellow>🐍 venv</> <#7f849c>|</> {{ end }}'
 
 	[[blocks.segments]] # Nix shell indicator
   type = 'text'
   style = 'plain'
-  foreground = 'blue'
-  template = '{{ if .Env.IN_NIX_SHELL }} nsh <grey>|</> {{ end }}'
+  template = '{{ if and .Env.IN_NIX_SHELL (not .Env.DEVSHELL_NAME) }}<blue> nsh</> <#7f849c>|</> {{ end }}'
 
   [[blocks.segments]]
     template = '{{ .Path }}'