To download a (partial) copy of any of these repositories, use
darcs get --partial http://modeemi.fi/~tuomov/repos/$REPOSITORY_NAMEwhere $REPOSITORY_NAME is one of the repositories below. For each repository there is also available an RSS feed listing the 50 latest changes.
If you make changes that you would like to contribute, use darcs send to email me an easily applicable patch bundle (after having first locally recorded the changes, of course). If you need non-ASCII characters in e.g. your name, you must unfortunately switch to the crappy UTF-8 encoding/locale for consistency of encodings. Darcs sucks and does not and unfortunately in all likelihood will not support locales and arbitrary encodings, with some of the developers pigheadedly and monoculturistically insisting instead that UTF-8 become the next hard-coded one-size-fits-all-and-none encoding that we will be painfully suffering from for ages to come, and provide no help on implementing that support. Unfortunately, all the other version control systems suck just as much.
Please note that unless you're used to sending email from your personal computer using a simple traditional unix MUA that needs a sendmail equivalent to actually send email, this method of sending the patch is unlikely to work. This is because all MTAs suck and are usually totally misconfigured. If you do not get a reply or see the patch in the reposity in a few days, you should ask me if I got it, perhaps sending it along as a normal email attachment. An attachable patch file can be obtained with darcs send -o filename.patch. Please prefix the subject line with "darcs patch" if you attach the patch. Also send the patch this way if you suspect that darcs send won't work.
For more help, see the darcs manual.