In line with the Nixpkgs manual.
A mechanical change, done with this command:
find pkgs -name "*.nix" | \
while read f; do \
sed -e 's/description\s*=\s*"\([a-z]\)/description = "\u\1/' -i "$f"; \
done
I manually skipped some:
* Descriptions starting with an abbreviation, a user name or package name
* Frequently generated expressions (haskell-packages.nix)
70-yubikey.rules depends on ConsoleKit which is not used by NixOS
anymore and has been superseeded by systemd
The ./configure flag also supports a --with-udevrulesdir flag but it
fails the detection and selects the wrong .rules file.
