Got source compiling.

test/test_source.c

@@ -0,0 +1,21 @@
+#include "../src/journal.h"
+#include "../src/source.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+int main(void) {
+	int success = EXIT_SUCCESS;
+	errno = 0;
+	struct journal j = journal();
+	struct sources s = sources(&j);
+	if(errno) goto catch;
+	printf("***success\n");
+	goto finally;
+catch:
+	success = EXIT_FAILURE, perror("source");
+finally:
+	sources_(&s);
+	journal_(&j);
+	return success;
+}