build/pkgs/toml/spkg-configure.m4: If system tox is used, mark as not required

Matthias Koeppe · Matthias Koeppe · commit 9eea50ccf4bf · 2021-10-17T16:33:08.000-07:00
diff --git a/build/pkgs/toml/spkg-configure.m4 b/build/pkgs/toml/spkg-configure.m4
@@ -0,0 +1,7 @@
+SAGE_SPKG_CONFIGURE([toml], [
+    sage_spkg_install_toml=yes
+  ], [dnl REQUIRED-CHECK
+    AC_REQUIRE([SAGE_SPKG_CONFIGURE_TOX])
+    dnl toml is only needed when we cannot use system tox.
+    AS_VAR_SET([SPKG_REQUIRE], [$sage_spkg_install_tox])
+  ])
