fixed remaining issues

Author: cvanelteren

libmamba/src/core/shell_init.cpp

@@ -513,24 +513,22 @@ namespace mamba
         content << R"nu(def --env ")nu" << exe_name << R"nu( deactivate"  [] {)nu";
         content << R"###(
     #remove active environment except base env
-    if $env.CONDA_PROMPT_MODIFIER? != null {
-      # unset set variables
-      for x in (^$env.MAMBA_EXE shell deactivate --shell nu
-              | split row (if $nu.os-info.name == "windows" { ";" } else { ":" }) {
-          if ("hide-env" in $x) {
-            hide-env ($x | parse "hide-env {var}").var.0
-          } else if $x != "" {
-            let keyValue = ($x
-            | str replace --regex '\s+' "" --all
-            | parse '{key}={value}'
-            )
-            load-env {$keyValue.0.key: $keyValue.0.value}
-          }
+    for x in (^$env.MAMBA_EXE shell deactivate --shell nu
+            | split row (if $nu.os-info.name == "windows" { ";" } else { ":" })) {
+        if ("hide-env" in $x) {
+          hide-env ($x | parse "hide-env {var}").var.0
+        } else if $x != "" {
+          let keyValue = ($x
+          | str replace --regex '\s+' "" --all
+          | parse '{key}={value}'
+          )
+          load-env {$keyValue.0.key: $keyValue.0.value}
+        }
     }
     # reset prompt
     $env.PROMPT_COMMAND = $env.PROMPT_COMMAND_BK
   }
-})###" << "\n";
+)###" << "\n";
         content << "# <<< mamba initialize <<<\n";
         return content.str();
     }