add jerbuild

ober

e16e32369f9f8b4943d89a3478d95cd3050c4e50

diff --git a/.jerbuild b/.jerbuild
index 6c7c4b5..d6c38b5 100644
--- a/.jerbuild
+++ b/.jerbuild
@@ -1,6 +1,8 @@
 ;; jerbuild build config for gitsafe.
 ;; All paths are relative to this file.
 
-(entry  "gitsafe/main.ss")
+(entry  "gitsafe/main-binary.ss")
 (output "gitsafe-bin")
+(requires "cc")
+(notes "Pure Jerboa binary build. No jerboa-native-rs archive and no DuckDB are required.")
 (libdirs ".")