`finalAttrs` is never the first argument. This should have been
called `prevAttrs` all along.
It confused me for a bit, because the callback _must not_ be strict
in `finalAttrs` (the first of _two_ parameters), or it will
recurse infinitely while trying to figure out what the attrNames are.
- unpin LLVM11. fix discrepancy with freshBootstrapTools and the tools
built on hydra. pinning the stdenv for the hydra build doesn't pin the
tools as the included packages are able to change.
- remove unused LLVM tools & libs which reduces the uncompressed and
compressed file sizes by more than 1/2. compressed tarball is now 40M
and uncompressed is around 200M
- add @loader_path/. to dylibs that reference other libs in the archive.
this is needed for libraries with re-exports.
- validate shared objects with @rpath references contain the reference
in lib
- add a test to verify that the @loader_path/ works for libc++ as it
re-exports libc++abi
The Darwin bootstrap currently requires curl, but it is not strictly
required. The bootstrap requires it for two things:
* Fetchers; and
* As a transitive dependency of llvm-manpages (via Sphinx).
For the fetchers, the bootstrap curl can be used. For hatch-vcs, the
dependency, its tests can be disabled. Doing this allows curl to be
dropped from the Darwin stdenv bootstrap.
These two commits make for a cleaner commit history and git blame than
https://github.com/NixOS/nixpkgs/pull/295105, where this refactor
was developed.
See its commit messages for details and design choices, esp. up to
and including 37f76fd4c3b23b324ab7ea06ef3b747338d2080f.
- merge libcxxabi into libcxx for LLVM 12, 13, 14, 15, 16, 17, and git.
- remove the link time workaround `-lc++ -lc++abi` from 58 packages as it is no longer required.
- fixes https://github.com/NixOS/nixpkgs/issues/166205
- provides alternative fixes for. https://github.com/NixOS/nixpkgs/issues/269548https://github.com/NixOS/nix/issues/9640
- pkgsCross.x86_64-freebsd builds work again
This change can be represented in 3 stages
1. merge libcxxabi into libcxx -- files: pkgs/development/compilers/llvm/[12, git]/{libcxx, libcxxabi}
2. update stdenv to account for merge -- files: stdenv.{adapters, cc.wrapper, darwin}
3. remove all references to libcxxabi outside of llvm (about 58 packages modified)
### merging libcxxabi into libcxx
- take the union of the libcxxabi and libcxx cmake flags
- eliminate the libcxx-headers-only package - it was only needed to break libcxx <-> libcxxabi circular dependency
- libcxx.cxxabi is removed. external cxxabi (freebsd) will symlink headers / libs into libcxx.
- darwin will re-export the libcxxabi symbols into libcxx so linking `-lc++` is sufficient.
- linux/freebsd `libc++.so` is a linker script `LINK(libc++.so.1, -lc++abi)` making `-lc++` sufficient.
- libcxx/default.nix [12, 17] are identical except for patches and `LIBCXX_ADDITIONAL_LIBRARIES` (only used in 16+)
- git/libcxx/defaul.nix does not link with -nostdlib when useLLVM is true so flag is removed. this is not much different than before as libcxxabi used -nostdlib where libcxx did not, so libc was linked in anyway.
### stdenv changes
- darwin bootstrap, remove references to libcxxabi and cxxabi
- cc-wrapper: remove c++ link workaround when libcxx.cxxabi doesn't exist (still exists for LLVM pre 12)
- adapter: update overrideLibcxx to account for a pkgs.stdenv that only has libcxx
### 58 package updates
- remove `NIX_LDFLAGS = "-l${stdenv.cc.libcxx.cxxabi.libName}` as no longer needed
- swift, nodejs_v8 remove libcxxabi references in the clang override
https://github.com/NixOS/nixpkgs/pull/292043
this equates to -ftrivial-auto-var-init=pattern
clang has removed support for -ftrivial-auto-var-init=zero and
are unlikely to re-add it, so use -ftrivial-auto-var-init=pattern
on both compilers if only to make behaviour more consistent
between the two.
add to pkgsExtraHardening's defaultHardeningFlags.
This is a small simplification of the control flow surrounding these cases. It should make it more obvious when each case happens, and also explicitly defines the current behaviour of --replace.
