From d00425276d5025720e45e12f3a58c0a83fa5420b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20Brand=C3=A9ho?= <thomas.brandeho@gmail.com>
Date: Mon, 23 Oct 2023 17:45:55 +0200
Subject: [PATCH] fix fnm version check (#2014)

---
 reflex/utils/exec.py          |  4 ++--
 reflex/utils/prerequisites.py | 13 +++++++++++++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/reflex/utils/exec.py b/reflex/utils/exec.py
index 9e53472924..38a9599177 100644
--- a/reflex/utils/exec.py
+++ b/reflex/utils/exec.py
@@ -247,13 +247,13 @@ def output_system_info():
     if system != "Windows":
         dependencies.extend(
             [
-                f"[FNM {constants.Fnm.VERSION} (Expected: {constants.Fnm.VERSION}) (PATH: {constants.Fnm.EXE})]",
+                f"[FNM {prerequisites.get_fnm_version()} (Expected: {constants.Fnm.VERSION}) (PATH: {constants.Fnm.EXE})]",
                 f"[Bun {prerequisites.get_bun_version()} (Expected: {constants.Bun.VERSION}) (PATH: {config.bun_path})]",
             ],
         )
     else:
         dependencies.append(
-            f"[FNM {constants.Fnm.VERSION} (Expected: {constants.Fnm.VERSION}) (PATH: {constants.Fnm.EXE})]",
+            f"[FNM {prerequisites.get_fnm_version()} (Expected: {constants.Fnm.VERSION}) (PATH: {constants.Fnm.EXE})]",
         )
 
     if system == "Linux":
diff --git a/reflex/utils/prerequisites.py b/reflex/utils/prerequisites.py
index 6852850694..9b558390bc 100644
--- a/reflex/utils/prerequisites.py
+++ b/reflex/utils/prerequisites.py
@@ -60,6 +60,19 @@ def get_node_version() -> version.Version | None:
         return None
 
 
+def get_fnm_version() -> version.Version | None:
+    """Get the version of fnm.
+
+    Returns:
+        The version of FNM.
+    """
+    try:
+        result = processes.new_process([constants.Fnm.EXE, "--version"], run=True)
+        return version.parse(result.stdout.split(" ")[1])  # type: ignore
+    except (FileNotFoundError, TypeError):
+        return None
+
+
 def get_bun_version() -> version.Version | None:
     """Get the version of bun.