realised i needed the venv thing

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

@@ -17,17 +17,22 @@ final_space = true
   alignment = 'left'
   newline = true
 
-	[[blocks.segments]]
-  type = 'text'
-  style = 'plain'
-  foreground = '#89dceb' # Nix Blue
-  template = '{{ if hasPrefix "flake-" .Env.name }}󱄅 flake <#7f849c>|</> {{ end }}'
-
-	[[blocks.segments]] # Rust nix shell
-  type = 'text'
-  style = 'plain'
-  foreground = 'red'
-  template = '{{ if contains "rustshell-env" .Env.name }}🦀 rustproject <#7f849c>|</> {{ end }}'
+[[blocks.segments]]
+type = 'text'
+style = 'plain'
+template = '''
+{{- if .Env.DEVSHELL_NAME -}}
+  {{- $parts := split "|" .Env.DEVSHELL_NAME -}}
+  {{- range $part := $parts -}}
+    {{- if $part -}}
+      {{- $sub := split "/" $part -}}
+      {{- if eq (len $sub) 2 -}}
+        <{{ index $sub "_1" }}>{{ index $sub "_0" }}</> <#7f849c>| </> 
+      {{- end -}}
+    {{- end -}}
+  {{- end -}}
+{{- end -}}
+'''
 
 	[[blocks.segments]] # Python venv
   type = 'text'