Make the scheme scripts executables to protect them from Guix reading them

Makefile

@@ -2,10 +2,10 @@ TMPDIR=/tmp/snow-fort-guix-channel
 
 build: repo.scm
 	mkdir -p ${TMPDIR}/hashes
-	gosh -r7 get-package-urls.r7rs-scm > ${TMPDIR}/package-urls.txt
+	./get-package-urls > ${TMPDIR}/package-urls.txt
 	sh ensure-hashes.sh ${TMPDIR}/hashes ${TMPDIR}/package-urls.txt
 	mkdir -p packages
-	gosh -r7 build.r7r-scm ${TMPDIR}
+	./build-repo ${TMPDIR}
 
 repo.scm:
 	wget https://snow-fort.org/s/repo.scm

build-repo

@@ -1,3 +1,5 @@
+#!/usr/bin/env -S gosh -r7
+
 (import (scheme base)
         (scheme read)
         (scheme write)

get-package-urls

@@ -1,3 +1,5 @@
+#!/usr/bin/env -S gosh -r7
+
 (import (scheme base)
         (scheme read)
         (scheme write)