If the environment variable HYDRA_DISALLOW_UNFREE is set to "1", then
evaluation of a package with license "unfree" will throw an error.
Thus such packages or any packages that depend on them will fail to
evaluate.
chromium: Improve update script and update to latest versions.
Previously, we had a single hash of the whole version response from
omahaproxy.
Unfortunately the dev version is released quite frequently, so the hash
is of no use at all (we could rather directly fetch rather than
executing the script, because it will fetch all channels anyway).
This pull request adds two methods of caching:
* First of all, if a perticular version/channel is already in the
previous version of the sources.nix file, don't download it again.
* And the second method is to check if the current sha256 is already
downloaded and reads the corresponding sha256 from the lookup table.
So, this should really help to avoid flooding the download servers and
to not stress impatient users too much.
Fix NSS library not finding root CA certificates.
This now uses more or less hardcoded CA certificates from Mozilla, which
is the case on Debian and Gentoo aswell. And it fixes the root CA
loading issue, as i discovered that firefox builds with the bundled
version of NSS. With this branch this is no longer the case.
My long-term plans are to integrate an automatic chainloader for
OPENSSL_X509_CERT_FILE, but I'm not sure if this is really a good idea
(hence not included in this branch), as the nss-pem module is still
somewhat experimental. Regardless of it's experimental nature i'm still
including it in order to make it possible for users to load custom PEM
encoded certificates into the NSS database.
This fixups also makes it possible to enable FIPS mode, in case someone
might be interested in that.
And finally, we have a Chromium without quirky bugs from the
experimental OpenSSL integration, which was my original motivation to do
this.
See #112 for further comments.
