From 3968806fd32888b80b50ed10c43f70bb950bd467 Mon Sep 17 00:00:00 2001
From: Andreas Kloeckner <inform@tiker.net>
Date: Sun, 2 Jan 2022 22:23:33 +0100
Subject: [PATCH] Add Maxima version query

---
 pymbolic/interop/maxima.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/pymbolic/interop/maxima.py b/pymbolic/interop/maxima.py
index 93a7299a..1e56673b 100644
--- a/pymbolic/interop/maxima.py
+++ b/pymbolic/interop/maxima.py
@@ -297,6 +297,21 @@ def _initialize(self):
 
         # }}}
 
+        # {{{ check maxima version
+
+        self.child.sendline(
+            f'"{self.executable}" --version')
+
+        ver_output = self.child.expect(["Maxima ([0-9.]+)"])
+        if ver_output != 0:
+            raise RuntimeError(
+                "unable to find maxima version from '{self.executable}'")
+
+        ver_match = self.child.match.group(1)
+        self.maxima_version = tuple(int(n) for n in ver_match.split(b"."))
+
+        # }}}
+
         import tempfile
         with tempfile.NamedTemporaryFile(suffix=".lisp") as maxima_init_f: