Nixpkgs: RLS fails to build on Darwin

[sheeldotme]

Describe the bug
RLS fails to build as libgit2 references a missing file "Security/SecureTransport.h".

cargo:warning=libgit2/src/streams/stransport.c:13:10: fatal error: 'Security/SecureTransport.h' file not found
cargo:warning=#include <Security/SecureTransport.h>
cargo:warning=         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
cargo:warning=1 error generated.
exit code: 1

--- stderr
fatal: not a git repository (or any of the parent directories): .git
thread 'main' panicked at '

Internal error occurred: Command "/nix/store/qjbrzscc9kdajnixyc969h16h8qq060h-clang-wrapper-7.1.0/bin/cc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-m64" "-I" "/private/var/folders/5f/ksjnkgp15qs0c2z_3zq2ffdr0000gn/T/nix-build-rls-1.34.0.drv-0/source/target/x86_64-apple-darwin/release/build/libgit2-sys-4936ab6e41c8aa86/out/include" "-I" "libgit2/src" "-I" "libgit2/deps/http-parser" "-I" "libgit2/deps/regex" "-I" "/private/var/folders/5f/ksjnkgp15qs0c2z_3zq2ffdr0000gn/T/nix-build-rls-1.34.0.drv-0/source/target/x86_64-apple-darwin/release/build/libssh2-sys-2c1937ca8cc5637a/out/include" "-fvisibility=hidden" "-o" "/private/var/folders/5f/ksjnkgp15qs0c2z_3zq2ffdr0000gn/T/nix-build-rls-1.34.0.drv-0/source/target/x86_64-apple-darwin/release/build/libgit2-sys-4936ab6e41c8aa86/out/build/libgit2/src/streams/stransport.o" "-c" "libgit2/src/streams/stransport.c" with args "cc" did not execute successfully (status code exit code: 1).

', /private/var/folders/5f/ksjnkgp15qs0c2z_3zq2ffdr0000gn/T/nix-build-rls-1.34.0.drv-0/rls-1.34.0-vendor/cc/src/lib.rs:2314:5
note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.

warning: build failed, waiting for other jobs to finish...
error: build failed
builder for '/nix/store/fll2202q8gjcf730p4hvvcb3giqk6b8x-rls-1.34.0.drv' failed with exit code 101

To Reproduce
Steps to reproduce the behavior:

1. Create a shell with rls as a buildInput

Expected behavior
Successful build

Screenshots
N/A
Additional context
cargo:warning=libgit2/src/streams/stransport.c:13:10: fatal error: 'Security/SecureTransport.h' file not found

Metadata
Sheels-MacBook-Pro:cordial-jalepeno sheelpatel$ nix run nixpkgs.nix-info -c nix-info -m

• system: "x86_64-darwin"
• host os: Darwin 18.6.0, macOS 10.14.5
• multi-user?: no
• sandbox: no
• version: nix-env (Nix) 2.2.2
• channels(sheelpatel): "nixpkgs-19.09pre183693.baa75f0c25a"
• nixpkgs: /Users/sheelpatel/.nix-defexpr/channels/nixpkgs

Maintainer information:

# a list of nixpkgs attributes affected by the problem
attributes: Security
# a list of nixos modules affected by the problem
module: rls

[matthias-t]

correct me if I'm wrong, but I believe this was fixed in #63759

[marsam]

Fixed in #63759