GHCJS uses integer-gmp, but cabal2nix generates a dependency list that
includes integer-simple instead. This tweaks the stage2 generator to
replace any instance of integer-simple with integer-gmp.
Things currently still work without this change (assuming
integer-simple is defined as null), as ghcjs includes integer-gmp in
its stage1 packages - so it's always available.
However, this change makes things a bit more explicit, rather than
leaving things to chance. If at any point the stage1 packages are also
split up into separate derivations, the integer-gmp package will need to
be passed along to the packages that depend on it. This change should
prevent some confusion going forward.
Previously, we were compiling Setup.hs with ghcjs (instead of ghc),
and that required that Cabal be available, otherwise the Setup.hs would
fail to compile.
Now that we are compiling Setup.hs with ghc, it's no longer necessary
to add Cabal as a dependency to all ghcjs packages.
The included patch from upstream fixes the issue described here:
https://bugreports.qt.io/browse/QTBUG-48321
The backing store of certain widgets was being improperly invalidated,
leading to display bugs in, e.g. VLC.
This patch is included in Qt 5.6, so we should remove it when we
upgrade.
Multitarget option builds gdb with support for all targets. That's
similar to gdb-multiarch package in Ubuntu or gdb with multitarget
USE-flag in Gentoo.
Nobody seems to have noticed this (except @Profpatsch) that options with
a "package" type do not get included in the manual.
So debugging this was a bit more involving because while generating the
manual there is an optionList' attribute built from the collected
attributes of all the option declarations.
Up to that point everything is fine except if it comes to
builtins.toXML, where attributes with { type = "derivation" } won't get
included, for example see here:
nix-repl> builtins.toXML { type = "derivation"; foo = "bar"; }
"<?xml version='1.0' encoding='utf-8'?>\n<expr>\n <derivation>
<repeated />\n </derivation>\n</expr>\n"
nix-repl> builtins.toXML { type = "somethingelse"; foo = "bar"; }
"<?xml version='1.0' encoding='utf-8'?>\n<expr>\n <attrs>
<attr name=\"foo\">\n <string value=\"bar\" />\n </attr>
<attr name=\"type\">\n <string value=\"somethingelse\" />
</attr>\n </attrs>\n</expr>\n"
The following function in libexpr/eval.cc (Nix) is responsible for toXML
dropping the attributes:
bool EvalState::isDerivation(Value & v)
{
if (v.type != tAttrs) return false;
Bindings::iterator i = v.attrs->find(sType);
if (i == v.attrs->end()) return false;
forceValue(*i->value);
if (i->value->type != tString) return false;
return strcmp(i->value->string.s, "derivation") == 0;
}
So I've renamed this now to "package" which is not only more consistent
with the option type but also shouldn't cause similar issues anymore.
Tested this on base of b60ceea, because building the dependencies on
recent libc/staging changes on master took too long.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Reported-by: Profpatsch <mail@profpatsch.de>
