diff --git a/.github/scripts/test-nushell-env.sh b/.github/scripts/test-nushell-env.sh
new file mode 100755
index 0000000000..93e07ba895
--- /dev/null
+++ b/.github/scripts/test-nushell-env.sh
@@ -0,0 +1,75 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+: "${VP_BIN_UNDER_TEST:?Set VP_BIN_UNDER_TEST to the vp binary to test}"
+
+nu_bin="$(command -v "${NU_BIN:-nu}")"
+test_root="$(mktemp -d)"
+trap 'rm -rf -- "$test_root"' EXIT
+
+test_home="$test_root/vp \"home\\with spaces\""
+
+VP_HOME="$test_home" "$VP_BIN_UNDER_TEST" env setup --refresh >/dev/null
+
+(
+  cd "$test_home"
+  env -u VP_HOME \
+    EXPECTED_VP_HOME="$test_home" \
+    PATH="$test_home/bin:$test_home/bin:/usr/bin:/bin" \
+    "$nu_bin" --commands '
+      source env.nu
+
+      let expected_home = ($env.EXPECTED_VP_HOME | path expand --no-symlink)
+      if $env.VP_HOME != $expected_home {
+        error make {
+          msg: $"VP_HOME mismatch: expected ($expected_home), got ($env.VP_HOME)"
+        }
+      }
+
+      let expected_bin = ($expected_home | path join "bin")
+      let actual_bin = ($env.PATH | first)
+      if $actual_bin != $expected_bin {
+        error make {
+          msg: $"PATH mismatch: expected first entry ($expected_bin), got ($actual_bin)"
+        }
+      }
+      let bin_count = ($env.PATH | where { $in == $expected_bin } | length)
+      if $bin_count != 1 {
+        error make {
+          msg: $"PATH contains the Vite+ bin directory ($bin_count) times"
+        }
+      }
+
+      let vp_output = (vp --version)
+      if $env.LAST_EXIT_CODE != 0 {
+        error make {
+          msg: "vp --version failed through the Nushell wrapper"
+        }
+      }
+      if ($vp_output | is-empty) {
+        error make {
+          msg: "vp --version returned no output"
+        }
+      }
+
+      vp env use 20.18.0 --no-install
+      if ("VP_NODE_VERSION" not-in $env) {
+        error make {
+          msg: "vp env use did not set VP_NODE_VERSION"
+        }
+      }
+      if $env.VP_NODE_VERSION != "20.18.0" {
+        error make {
+          msg: $"VP_NODE_VERSION mismatch: expected 20.18.0, got ($env.VP_NODE_VERSION)"
+        }
+      }
+
+      vp env use --unset
+      if ("VP_NODE_VERSION" in $env) {
+        error make {
+          msg: "vp env use --unset did not remove VP_NODE_VERSION"
+        }
+      }
+    '
+)
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3855fcfd22..490f336da9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -945,6 +945,17 @@ jobs:
       - name: Install Global CLI vp
         run: pnpm bootstrap-cli:ci
 
+      # https://github.com/marketplace/actions/setup-nu
+      - name: Install Nushell
+        if: runner.os == 'Linux'
+        uses: hustcer/setup-nu@ccd5bb5426b05a32009c2ba967946231f3919c97 # v3.25
+        with:
+          version: '*'
+
+      - name: Test generated Nushell environment
+        if: runner.os == 'Linux'
+        run: VP_BIN_UNDER_TEST="$HOME/.vite-plus/bin/vp" .github/scripts/test-nushell-env.sh
+
       # Provision the managed runtime once into the real home so cases can
       # seed from it (seed-runtime) instead of each downloading ~50MB.
       # Best-effort: without a seed, cases that need the runtime download it
diff --git a/crates/vp_global_cli/src/commands/env/setup.rs b/crates/vp_global_cli/src/commands/env/setup.rs
index ad4fd9c237..78a3ecc893 100644
--- a/crates/vp_global_cli/src/commands/env/setup.rs
+++ b/crates/vp_global_cli/src/commands/env/setup.rs
@@ -739,6 +739,11 @@ Register-ArgumentCompleter -Native -CommandName vpr -ScriptBlock $__vpr_comp
 const VP_USE_CMD_CONTENT: &str = "@echo off\r\nset VP_ENV_USE_EVAL_ENABLE=1\r\nset VP_HOME=%~dp0..\r\nfor /f \"delims=\" %%i in ('%~dp0..\\current\\bin\\vp.exe env use %*') do %%i\r\nset VP_ENV_USE_EVAL_ENABLE=\r\n";
 
 fn render_home_relative_path(path: &std::path::Path, home_dir: Option<&std::path::Path>) -> String {
+    fn render_path(path: &std::path::Path) -> String {
+        let rendered = path.display().to_string();
+        if cfg!(windows) { rendered.replace('\\', "/") } else { rendered }
+    }
+
     // Use $HOME-relative path if install dir is under HOME (like rustup's ~/.cargo/env).
     // This makes the env file portable across sessions where HOME may differ.
     home_dir
@@ -748,10 +753,10 @@ fn render_home_relative_path(path: &std::path::Path, home_dir: Option<&std::path
                 "$HOME".to_string()
             } else {
                 // Normalize to forward slashes for $HOME/... paths (POSIX-style)
-                format!("$HOME/{}", s.display().to_string().replace('\\', "/"))
+                format!("$HOME/{}", render_path(s))
             }
         })
-        .unwrap_or_else(|| path.display().to_string().replace('\\', "/"))
+        .unwrap_or_else(|| render_path(path))
 }
 
 fn render_nu_path_ref(path_ref: &str) -> String {
@@ -762,6 +767,10 @@ fn render_nu_path_ref(path_ref: &str) -> String {
     }
 }
 
+fn escape_nu_double_quoted_string(value: &str) -> String {
+    value.replace('\\', "\\\\").replace('"', "\\\"")
+}
+
 /// Render the env-file content for `shell` against `vite_plus_home`.
 fn render_env_content(shell: EnvShell, vite_plus_home: &vt_path::AbsolutePath) -> String {
     let bin_path = vite_plus_home.join("bin");
@@ -780,8 +789,10 @@ fn render_env_content(shell: EnvShell, vite_plus_home: &vt_path::AbsolutePath) -
         EnvShell::Nu => {
             // Nushell requires `~` instead of `$HOME` in string literals — `$HOME` is not
             // expanded at parse time, so PATH entries would contain a literal "$HOME/...".
-            let home_path_ref_nu = render_nu_path_ref(&home_path_ref);
-            let bin_path_ref_nu = render_nu_path_ref(&bin_path_ref);
+            let home_path_ref_nu =
+                escape_nu_double_quoted_string(&render_nu_path_ref(&home_path_ref));
+            let bin_path_ref_nu =
+                escape_nu_double_quoted_string(&render_nu_path_ref(&bin_path_ref));
             ENV_TEMPLATE_NU
                 .replace("__VP_HOME__", &home_path_ref_nu)
                 .replace("__VP_BIN__", &bin_path_ref_nu)
@@ -946,6 +957,35 @@ mod tests {
         assert!(env_ps1_path.as_path().exists(), "env.ps1 file should be created");
     }
 
+    #[test]
+    fn test_escape_nu_double_quoted_string() {
+        assert_eq!(
+            escape_nu_double_quoted_string(r#"vp "home\with spaces""#),
+            r#"vp \"home\\with spaces\""#
+        );
+    }
+
+    #[cfg(unix)]
+    #[test]
+    fn test_render_env_content_escapes_nu_paths() {
+        let _guard = home_guard("/nonexistent-home-dir");
+        let home = AbsolutePathBuf::new(std::path::PathBuf::from(r#"/tmp/vp "home\with spaces""#))
+            .unwrap();
+
+        let content = render_env_content(EnvShell::Nu, &home);
+
+        assert!(
+            content.contains(
+                r#"$env.VP_HOME = ("/tmp/vp \"home\\with spaces\"" | path expand --no-symlink)"#
+            ),
+            "env.nu should escape VP_HOME for a Nushell string literal, got: {content}"
+        );
+        assert!(
+            content.contains(r#"prepend "/tmp/vp \"home\\with spaces\"/bin")"#),
+            "env.nu should escape the bin path for a Nushell string literal, got: {content}"
+        );
+    }
+
     #[tokio::test]
     async fn test_create_env_files_nu_contains_path_guard() {
         let temp_dir = TempDir::new().unwrap();