When testing the egg updater, I discovered
that there was not a single package using the egg updater.
So this adds some (random) Chicken eggs for testing the egg updater.
And, well, there actually was a bug in the egg updater.
Note for reviewers: I already ran 'guix lint' on the packages.
gnu: Add chicken-crypto-tools.
gnu: Add chicken-srfi-13.
gnu: Add chicken-srfi-37.
import: egg: Fix updater.
gnu/packages/chicken.scm | 90 ++++++++++++++++++++++++++++++++++++++++
guix/import/egg.scm | 9 +---
2 files changed, 92 insertions(+), 7 deletions(-)