From 6d9007cdb2a542f285525747ee3fea1baedc0331 Mon Sep 17 00:00:00 2001
From: Pi <pi-urbit@mrtheplague.net>
Date: Tue, 19 Nov 2013 09:17:13 -0800
Subject: [PATCH] bail early when pier exists

Because I'm tired of waiting for keygen to find out my pier already exists.
---
 v/loop.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/v/loop.c b/v/loop.c
index f920fcb118..2271c1c624 100644
--- a/v/loop.c
+++ b/v/loop.c
@@ -1638,6 +1638,12 @@ _lo_boot(void)
     u2_noun pig;
 
     if ( 0 == u2_Host.ops_u.imp_c ) {
+      c3_c get_c[2049];
+      snprintf(get_c, 2048, "%s/get", u2_Host.cpu_c);
+      if ( 0 == access(get_c, 0) ) {
+          uL(fprintf(uH, "pier: already built\n"));
+          exit(1);
+      }
       u2_noun ten = _lo_zen(u2A);
       uL(fprintf(uH, "generating 2048-bit RSA pair...\n"));