1 files changed, 4 insertions, 5 deletions
diff --git a/Makefile b/Makefile
index a7fa739..a716c33 100644
--- a/Makefile
+++ b/Makefile
@@ -15,11 +15,10 @@
 
 CURL ?= curl
 BLOG_URL ?= https://blog.replicant.us/page
-CONVERT ?= guix shell \
-		python python-beautifulsoup4 \
-		python-html2text \
-		python-sh \
-		-- python3 convert.py
+GUIX_COMMIT ?= b25b94335a3ee8d68d2145da8e5ea0325ecea451
+GUIX_SHELL ?= guix time-machine --commit=$(GUIX_COMMIT) -- shell -C
+GUIX_PACKAGES ?= python python-beautifulsoup4 python-html2text python-sh
+CONVERT ?= $(GUIX_SHELL) $(GUIX_PACKAGES) -- python3 convert.py
 
 SENTINEL =