From 90f02252aa537bb653c2496f94acf801c2ea019f Mon Sep 17 00:00:00 2001
From: Jason Woofenden <jason@jasonwoof.com>
Date: Mon, 18 May 2015 17:49:52 -0400
Subject: [PATCH] use sha1 instead of mtimes for images

---
 .gitignore |    2 +-
 Makefile   |    8 ++++----
 styl.styl  |    2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/.gitignore b/.gitignore
index a3236b1..49668b8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,4 +4,4 @@
 /files
 /tags
 /style.css
-/.image-mtimes.styl
+/.sha1sums.styl
diff --git a/Makefile b/Makefile
index dcea8ba..5787916 100644
--- a/Makefile
+++ b/Makefile
@@ -3,22 +3,22 @@ generated_images= $(svgs:.svg=.png)
 images=
 images += $(generated_images)
 
-objects= $(generated_images) .image-mtimes.styl style.css tags
+objects= $(generated_images) .sha1sums.styl style.css tags
 
 all: $(objects)
 
 clean:
 	rm -f $(objects)
 
-style.css: styl.styl .image-mtimes.styl
+style.css: styl.styl .sha1sums.styl
 	compile-stylus $<
 
-.image-mtimes.styl: $(images)
+.sha1sums.styl: $(images)
 	( \
 		echo -n 'mtimes = {'; \
 		div=' '; \
 		for x in $^; do \
-			echo -n "$$div '$$x': \"$$x?m=$$(stat -c '%Y' $$x)\""; \
+			echo -n "$$div '$$x': \"$$x?m=$$(sha1sum < $$x | head -c 10)\""; \
 			div=,; \
 		done; \
 		echo " }"; \
diff --git a/styl.styl b/styl.styl
index 7cf26f6..8537dfb 100644
--- a/styl.styl
+++ b/styl.styl
@@ -1,5 +1,5 @@
 @require 'inc/wfpl/stylus-helpers.styl'
-@require '.image-mtimes.styl'
+@require '.sha1sums.styl'
 
 // dimensions
 site-width = 934px // inside the shadow
-- 
1.7.10.4