Not strictly necessary, but prevents xournalpp from looking for /proc all the
time.

Index: src/util/Stacktrace.cpp
--- src/util/Stacktrace.cpp.orig
+++ src/util/Stacktrace.cpp
@@ -68,6 +68,12 @@ fs::path Stacktrace::getExePath() {
     delete[] path;
     return "";
 }
+#elif defined(__OpenBSD__)
+
+fs::path Stacktrace::getExePath() {
+    return fs::path("${LOCALBASE}/bin/xournalpp");
+}
+
 #else
 auto Stacktrace::getExePath() -> fs::path {
 #ifndef PATH_MAX