From cd5ce9d278a2b0687f20d394f2ff254fcb6b1e05 Mon Sep 17 00:00:00 2001
From: Sebastian Ehlert <28669218+awvwgk@users.noreply.github.com>
Date: Sun, 16 Oct 2022 10:44:20 +0200
Subject: [PATCH] Allow strings and lists of strings for preprocess

---
 src/fpm/metadata/models.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/fpm/metadata/models.py b/src/fpm/metadata/models.py
index d16f6a8..db111bf 100644
--- a/src/fpm/metadata/models.py
+++ b/src/fpm/metadata/models.py
@@ -234,13 +234,13 @@ class Preprocess(BaseModel):
     Preprocessing directives for the project.
     """
 
-    macros: List[str] = []
+    macros: Union[str, List[str]] = []
     """Preprocessor macros e.g. ['HAVE_MPI', 'VALUE=1', 'VERSION={version}']"""
 
-    directories: List[str] = []
+    directories: Union[str, List[str]] = []
     """Include directories"""
 
-    suffixes: List[str] = []
+    suffixes: Union[str, List[str]]= []
     """Suffixes the preprocessor should run on"""