(this is reapplying 6b1957d17ae687f7db09db63667fa6f2cc40990b, which got
lost in a merge)
Including apple_sdk.sdk is generally a recipe for a bad time on LLVM 3.8
and above, since you end up with bad headers in the wrong place that hurt
the new libc++ in 3.8 and above. In this case, qt only wanted the super-
generic SDK for CUPS headers, which we can just depend on directly now.
stdenv.cross is a silly attribute that needs to go leaving the well-defined hostPlatform and targetPlatform. This PR doesn't remove it, but changes its definition: before it tracked the target platform which is sometimes more useful for compilers, and now it tracks the host platform which is more useful for everything else. Most usages are libraries, falling in the "everything else" category, so changing the definition makes sense to appease the majority. The few compiler (gcc in particular) uses that exist I remove to use targetPlatform --- preserving correctness and becoming more explicit in the process.
I would also update the documentation aside mentioning stdenv.cross as deprecated, but the definition given actually erroneously assumes this PR is already merged!
The previous commit redefines `stdenv.cross` for the sake of normal
libaries, the most common use-case of that attribute. Some compilers
however relied on the old definition so we have them use
`targetPlatform` instead. This special casing is fine because we
eventually want to remove `stdenv.cross` and use either `hostPlatform`
or `targetPlatform` instead.
This reverts commit 9f86136cefbd3e050b96a307346278fe9ad8a5bf.
Rust is nowadays required for building Firefox, so the channel updates
are blocked on this.
(It also builds fine for me.)
On my local nixos machine, `useSandbox = true;` wasn't enabled. This exposed the fact that various scripts weren't shebang-patched. @cleverca22 has provided the fix.
cc @peti @domenkozar @Ericson2314
