Day 16

For this day I used `guile-pfds` as a dependency.  To use it, run:

```sh
apt install guile guix
guix pull
guix package -u
guix install guile-pfds
echo \
'export GUILE_LOAD_PATH=$HOME/.guix-profile/share/guile/site/3.0' \
> ~/.profile
. .profile
```

1 files changed, 1 insertions, 0 deletions

diff --git a/main b/main
index 39f8da9..84e69ab 100755
--- a/main
+++ b/main
@@ -2,6 +2,7 @@
 !#
 
 (use-modules (ice-9 format) (ice-9 regex))
+(set! %load-extensions (cons ".sls" %load-extensions)) ; Allow r6rs dependencies
 
 (define args (program-arguments))