Clone of https://github.com/NixOS/nixpkgs.git (to stress-test knotserver)

Revert "libcxx: add linker scripts for libc++.a to ensure libc++abi.a is properly linked"

This reverts commit 72e1764199805ab6e602fa3762a4d95bfdf80cb8.

This causes the GHC panic reported in issue #55848.

-24
-5
pkgs/development/compilers/llvm/4/libc++/default.nix
··· 44 44 45 45 linkCxxAbi = stdenv.isLinux; 46 46 47 - postInstall = '' 48 - mv $out/lib/libc++.a $out/lib/libc++_static.a 49 - cp ${./libc++.a} $out/lib/libc++.a 50 - ''; 51 - 52 47 setupHooks = [ 53 48 ../../../../../build-support/setup-hooks/role.bash 54 49 ./setup-hook.sh
-1
pkgs/development/compilers/llvm/4/libc++/libc++.a
··· 1 - INPUT(-lc++_static -lc++abi)
-5
pkgs/development/compilers/llvm/5/libc++/default.nix
··· 38 38 39 39 linkCxxAbi = stdenv.isLinux; 40 40 41 - postInstall = '' 42 - mv $out/lib/libc++.a $out/lib/libc++_static.a 43 - cp ${./libc++.a} $out/lib/libc++.a 44 - ''; 45 - 46 41 setupHooks = [ 47 42 ../../../../../build-support/setup-hooks/role.bash 48 43 ./setup-hook.sh
-1
pkgs/development/compilers/llvm/5/libc++/libc++.a
··· 1 - INPUT(-lc++_static -lc++abi)
-5
pkgs/development/compilers/llvm/6/libc++/default.nix
··· 38 38 39 39 linkCxxAbi = stdenv.isLinux; 40 40 41 - postInstall = '' 42 - mv $out/lib/libc++.a $out/lib/libc++_static.a 43 - cp ${./libc++.a} $out/lib/libc++.a 44 - ''; 45 - 46 41 setupHooks = [ 47 42 ../../../../../build-support/setup-hooks/role.bash 48 43 ./setup-hook.sh
-1
pkgs/development/compilers/llvm/6/libc++/libc++.a
··· 1 - INPUT(-lc++_static -lc++abi)
-5
pkgs/development/compilers/llvm/7/libc++/default.nix
··· 36 36 37 37 linkCxxAbi = stdenv.isLinux; 38 38 39 - postInstall = '' 40 - mv $out/lib/libc++.a $out/lib/libc++_static.a 41 - cp ${./libc++.a} $out/lib/libc++.a 42 - ''; 43 - 44 39 setupHooks = [ 45 40 ../../../../../build-support/setup-hooks/role.bash 46 41 ./setup-hook.sh
-1
pkgs/development/compilers/llvm/7/libc++/libc++.a
··· 1 - INPUT(-lc++_static -lc++abi)