Problems statically link LuaJIT

I’m working on PR#123287. It’s preferred to statically link LuaJIT, FreeType, OpenAL, and libuvc to Arcan. To statically link the dependencies I make them available in the $sourceRoot/external/git/ directory (see postUnpack).

  postUnpack = ''
    ln -sv ${luajit.src} $sourceRoot/external/git/luajit
    ln -sv ${freetype.src} $sourceRoot/external/git/freetype
    ln -sv ${srcs.openal} $sourceRoot/external/git/openal
    ln -sv ${libuvc.src} $sourceRoot/external/git/libuvc
    [...]
  ''

But when I uncomment the first line I get the following output when trying to build Arcan

$ nix-build -A arcan
these derivations will be built:
  /nix/store/y89l0jp39ayfzf0n3i6m5mqkkbq4vdx3-arcan-master.drv
building '/nix/store/y89l0jp39ayfzf0n3i6m5mqkkbq4vdx3-arcan-master.drv'...
unpacking sources
unpacking source archive /nix/store/ciacybnvkpdyxhhi8lg224r037l334km-source
source root is source
'source/external/git/luajit' -> '/nix/store/q8jjxs2bb5wgammhrhj3r6akxkxwani4-source'
'source/external/git/freetype' -> '/nix/store/g1v1303817n0gap10lnxgclrm5zhk9xx-freetype-2.10.4.tar.xz'
'source/external/git/openal' -> '/nix/store/hs28gwfaidfk65yx5n08fw89w9h0ggmy-source'
'source/external/git/libuvc' -> '/nix/store/gsq0wiv0di91bvy17f72idmkhvpyp3i2-source'
/build/source/doc /build
/build
patching sources
applying patch /nix/store/23a6mii03c05khppdvhqfvgv5azlwzn1-nosuid.patch
patching file src/CMakeLists.txt
configuring
fixing cmake files...
cmake flags: -DCMAKE_FIND_USE_SYSTEM_PACKAGE_REGISTRY=OFF -DCMAKE_FIND_USE_PACKAGE_REGISTRY=OFF -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_SKIP_BUILD_RPATH=ON -DBUILD_TESTING=OFF -DCMAKE_INSTALL_LOCALEDIR=/nix/store/13jcj6g5v6f85d5hzashzja4gqln1v77-arcan-master/share/locale -DCMAKE_INSTALL_LIBEXECDIR=/nix/store/13jcj6g5v6f85d5hzashzja4gqln1v77-arcan-master/libexec -DCMAKE_INSTALL_LIBDIR=/nix/store/13jcj6g5v6f85d5hzashzja4gqln1v77-arcan-master/lib -DCMAKE_INSTALL_DOCDIR=/nix/store/13jcj6g5v6f85d5hzashzja4gqln1v77-arcan-master/share/doc/arcan -DCMAKE_INSTALL_INFODIR=/nix/store/13jcj6g5v6f85d5hzashzja4gqln1v77-arcan-master/share/info -DCMAKE_INSTALL_MANDIR=/nix/store/13jcj6g5v6f85d5hzashzja4gqln1v77-arcan-master/share/man -DCMAKE_INSTALL_OLDINCLUDEDIR=/nix/store/13jcj6g5v6f85d5hzashzja4gqln1v77-arcan-master/include -DCMAKE_INSTALL_INCLUDEDIR=/nix/store/13jcj6g5v6f85d5hzashzja4gqln1v77-arcan-master/include -DCMAKE_INSTALL_SBINDIR=/nix/store/13jcj6g5v6f85d5hzashzja4gqln1v77-arcan-master/sbin -DCMAKE_INSTALL_BINDIR=/nix/store/13jcj6g5v6f85d5hzashzja4gqln1v77-arcan-master/bin -DCMAKE_INSTALL_NAME_DIR=/nix/store/13jcj6g5v6f85d5hzashzja4gqln1v77-arcan-master/lib -DCMAKE_POLICY_DEFAULT_CMP0025=NEW -DCMAKE_OSX_SYSROOT= -DCMAKE_FIND_FRAMEWORK=LAST -DCMAKE_STRIP=/nix/store/7m6p435s1c9ysfs266n9ppfw9zkii697-binutils-2.35.1/bin/strip -DCMAKE_RANLIB=/nix/store/7m6p435s1c9ysfs266n9ppfw9zkii697-binutils-2.35.1/bin/ranlib -DCMAKE_AR=/nix/store/7m6p435s1c9ysfs266n9ppfw9zkii697-binutils-2.35.1/bin/ar -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -DCMAKE_INSTALL_PREFIX=/nix/store/13jcj6g5v6f85d5hzashzja4gqln1v77-arcan-master -DBUILD_PRESET=everything -DISTR_TAG=Nixpkgs -DENGINE_BUILDTAG=master+Nixpkgs ../src

Build Presets:
        -DBUILD_PRESET=everything client

Audio/Video/Input Support:
        -DVIDEO_PLATFORM=egl-dri, sdl, sdl2, egl-gles
        -DAGP_PLATFORM=gl21, gles2, gles3, stub

VIDEO_PLATFORM=egl-dri options:
        -DHYBRID_SDL=[Off|On] - Enable arcan_sdl output build
        -DHYBRID_HEADLESS=[Off|On] - Enable arcan_headless output build

Cmake Options:
        -DCMAKE_BUILD_TYPE=[Debug|Release|Profile|DebugTrace]
        -DENABLE_WALL_SPAM=[Off|On] - More build warnings
        -DENABLE_SIMD=[On|Off] - Enable SIMD optimized instructions
                -DSIMD_ALIGNED=[Off|On] - SIMD support assumes 16-byte alignment
        -DENABLE_LTO=[Off|On] - Build with Link-Time Optimizations

Dependency Management:
        -DSTATIC_SQLite3=[Off|On] - In-source SQLite3
        -DSTATIC_OPENAL=[Off|On] - In-source OpenAL, see external/README
        -DSTATIC_FREETYPE=[Off|On] - In-source Freetype
        -DSTATIC_LIBUVC=[Off|On] - In-source libuvc

Optional engine flags:
        -DENABLE_LWA=[Off|On] - Build LWA Arcan client (nesting support)
        -DDISABLE_JIT=[Off|On] - Don't Link with luajit51 (even if found)
        -DBUILTIN_LUA=[Off|On] - Static build lua51 (with disable_jit)
        -DNO_FSRV=[Off|On] - Build Arcan without support for frameservers
        -DSHMIF_DISABLE_DEBUGIF=[Off|On] - Remove server- controlled debug layer

Frameserver flags:
Decode:
        -DFSRV_DECODE_UVC=[Off|On] - Add support for libuvc- USB video cameras
Terminal:
        -DFSRV_TERMINAL_NOEXEC=[Off|On] - Lock down 'exec' path from scripts

Install / Autodetection Overrides:
        -D(DISABLE_FSRV_ (encode, decode, net, remoting, terminal, game)=ON
        -D(APPL_DEST, RES_DEST, APIMAN_DEST, MAN_DEST, SCRIPTS_DEST)=/some/path


------------- Configuration Results ---------------


-- Stage 1: dependencies and configuration
evdev           libxkbcommon
CMake Error at CMakeLists.txt:8 (_message):
  error: could not find git for clone of luajit
Call Stack (most recent call first):
  /nix/store/yb03if8wrzdzd4f4rnmaxkj7mr58l0w5-cmake-3.19.7/share/cmake-3.19/Modules/ExternalProject.cmake:2542 (message)
  /nix/store/yb03if8wrzdzd4f4rnmaxkj7mr58l0w5-cmake-3.19.7/share/cmake-3.19/Modules/ExternalProject.cmake:3430 (_ep_add_download_command)
  CMakeLists.txt:421 (ExternalProject_Add)


-- Configuring incomplete, errors occurred!
See also "/build/source/build/CMakeFiles/CMakeOutput.log".
See also "/build/source/build/CMakeFiles/CMakeError.log".
builder for '/nix/store/y89l0jp39ayfzf0n3i6m5mqkkbq4vdx3-arcan-master.drv' failed with exit code 1
error: build of '/nix/store/y89l0jp39ayfzf0n3i6m5mqkkbq4vdx3-arcan-master.drv' failed

And when I add git to nativeBuildInputs:

$ nix-build -A arcan
these derivations will be built:
  /nix/store/n7zi9mh5qx70vbghnj5cy1ifj78g5lx6-arcan-master.drv
building '/nix/store/n7zi9mh5qx70vbghnj5cy1ifj78g5lx6-arcan-master.drv'...
unpacking sources
unpacking source archive /nix/store/ciacybnvkpdyxhhi8lg224r037l334km-source
source root is source
'source/external/git/luajit' -> '/nix/store/q8jjxs2bb5wgammhrhj3r6akxkxwani4-source'
'source/external/git/freetype' -> '/nix/store/g1v1303817n0gap10lnxgclrm5zhk9xx-freetype-2.10.4.tar.xz'
'source/external/git/openal' -> '/nix/store/hs28gwfaidfk65yx5n08fw89w9h0ggmy-source'
'source/external/git/libuvc' -> '/nix/store/gsq0wiv0di91bvy17f72idmkhvpyp3i2-source'
/build/source/doc /build
/build
patching sources
applying patch /nix/store/23a6mii03c05khppdvhqfvgv5azlwzn1-nosuid.patch
patching file src/CMakeLists.txt
configuring
fixing cmake files...
cmake flags: -DCMAKE_FIND_USE_SYSTEM_PACKAGE_REGISTRY=OFF -DCMAKE_FIND_USE_PACKAGE_REGISTRY=OFF -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_SKIP_BUILD_RPATH=ON -DBUILD_TESTING=OFF -DCMAKE_INSTALL_LOCALEDIR=/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master/share/locale -DCMAKE_INSTALL_LIBEXECDIR=/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master/libexec -DCMAKE_INSTALL_LIBDIR=/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master/lib -DCMAKE_INSTALL_DOCDIR=/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master/share/doc/arcan -DCMAKE_INSTALL_INFODIR=/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master/share/info -DCMAKE_INSTALL_MANDIR=/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master/share/man -DCMAKE_INSTALL_OLDINCLUDEDIR=/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master/include -DCMAKE_INSTALL_INCLUDEDIR=/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master/include -DCMAKE_INSTALL_SBINDIR=/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master/sbin -DCMAKE_INSTALL_BINDIR=/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master/bin -DCMAKE_INSTALL_NAME_DIR=/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master/lib -DCMAKE_POLICY_DEFAULT_CMP0025=NEW -DCMAKE_OSX_SYSROOT= -DCMAKE_FIND_FRAMEWORK=LAST -DCMAKE_STRIP=/nix/store/7m6p435s1c9ysfs266n9ppfw9zkii697-binutils-2.35.1/bin/strip -DCMAKE_RANLIB=/nix/store/7m6p435s1c9ysfs266n9ppfw9zkii697-binutils-2.35.1/bin/ranlib -DCMAKE_AR=/nix/store/7m6p435s1c9ysfs266n9ppfw9zkii697-binutils-2.35.1/bin/ar -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -DCMAKE_INSTALL_PREFIX=/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master -DBUILD_PRESET=everything -DISTR_TAG=Nixpkgs -DENGINE_BUILDTAG=master+Nixpkgs ../src

Build Presets:
        -DBUILD_PRESET=everything client

Audio/Video/Input Support:
        -DVIDEO_PLATFORM=egl-dri, sdl, sdl2, egl-gles
        -DAGP_PLATFORM=gl21, gles2, gles3, stub

VIDEO_PLATFORM=egl-dri options:
        -DHYBRID_SDL=[Off|On] - Enable arcan_sdl output build
        -DHYBRID_HEADLESS=[Off|On] - Enable arcan_headless output build

Cmake Options:
        -DCMAKE_BUILD_TYPE=[Debug|Release|Profile|DebugTrace]
        -DENABLE_WALL_SPAM=[Off|On] - More build warnings
        -DENABLE_SIMD=[On|Off] - Enable SIMD optimized instructions
                -DSIMD_ALIGNED=[Off|On] - SIMD support assumes 16-byte alignment
        -DENABLE_LTO=[Off|On] - Build with Link-Time Optimizations

Dependency Management:
        -DSTATIC_SQLite3=[Off|On] - In-source SQLite3
        -DSTATIC_OPENAL=[Off|On] - In-source OpenAL, see external/README
        -DSTATIC_FREETYPE=[Off|On] - In-source Freetype
        -DSTATIC_LIBUVC=[Off|On] - In-source libuvc

Optional engine flags:
        -DENABLE_LWA=[Off|On] - Build LWA Arcan client (nesting support)
        -DDISABLE_JIT=[Off|On] - Don't Link with luajit51 (even if found)
        -DBUILTIN_LUA=[Off|On] - Static build lua51 (with disable_jit)
        -DNO_FSRV=[Off|On] - Build Arcan without support for frameservers
        -DSHMIF_DISABLE_DEBUGIF=[Off|On] - Remove server- controlled debug layer

Frameserver flags:
Decode:
        -DFSRV_DECODE_UVC=[Off|On] - Add support for libuvc- USB video cameras
Terminal:
        -DFSRV_TERMINAL_NOEXEC=[Off|On] - Lock down 'exec' path from scripts

Install / Autodetection Overrides:
        -D(DISABLE_FSRV_ (encode, decode, net, remoting, terminal, game)=ON
        -D(APPL_DEST, RES_DEST, APIMAN_DEST, MAN_DEST, SCRIPTS_DEST)=/some/path


------------- Configuration Results ---------------


-- Stage 1: dependencies and configuration
evdev           libxkbcommon
linux-usb       detected

---- Configuration results:
compiler        GNU
video           egl-dri
                        +support sdl platform
                        +support headless platform
accel           gl21
audio           openal
input           evdev
headless        egl-dri-rnode
lua             luajit51 static

-- Stage 2, Frameservers and external clients
(a12)  ffmpeg support found, H264 enc/dec enabled
wayland support enabled
game/retro      3D support (lwa)
(decode) addding support for  text-to-speech
(decode) adding support for  probe (libmagic)
encode+opts     tesseract+leptonica(ocr) vnc
encode-opts
remoting support:       a12 vnc
frameservers    terminal game net decode encode encode remoting avfeed

-- Stage 3, LWA Build

-- Stage 4, Linking / Packaging (=>/nix/store/0baj5nmjc11w5hf09z6w04yfvm9x7j20-arcan-master)
-- Appending sdl platform build--
-- Appending headless platform build--
egl-dri+privsep installing SUID
API- manpages   mantmp found

-- Configuring done
-- Generating done
CMake Warning:
  Manually-specified variables were not used by the project:

    BUILD_TESTING
    CMAKE_EXPORT_NO_PACKAGE_REGISTRY
    CMAKE_POLICY_DEFAULT_CMP0025
    ISTR_TAG


-- Build files have been written to: /build/source/build
cmake: enabled parallel building
building
build flags: -j4 -l4 SHELL=/nix/store/75d0ra57gdcsmgqrrx42lrpvx97bvynb-bash-4.4-p23/bin/bash
Scanning dependencies of target luajit
Scanning dependencies of target arcan_db
Scanning dependencies of target arcan_shmif
Scanning dependencies of target arcan_shmif_int
[  0%] Creating directories for 'luajit'
[  0%] Building C object CMakeFiles/arcan_db.dir/tools/db/dbtool.c.o
[  0%] Building C object shmif/CMakeFiles/arcan_shmif.dir/arcan_shmif_control.c.o
[  0%] Building C object shmif/CMakeFiles/arcan_shmif_int.dir/arcan_shmif_control.c.o
[  0%] Performing download step (git clone) for 'luajit'
CMake Error at luajit-prefix/src/luajit-stamp/luajit-download-Release.cmake:49 (message):
  Command failed: 1

   '/nix/store/yb03if8wrzdzd4f4rnmaxkj7mr58l0w5-cmake-3.19.7/bin/cmake' '-P' '/build/source/build/luajit-prefix/tmp/luajit-gitclone.cmake'

  See also

    /build/source/build/luajit-prefix/src/luajit-stamp/luajit-download-*.log


make[2]: *** [CMakeFiles/luajit.dir/build.make:110: luajit-prefix/src/luajit-stamp/luajit-download] Error 1
make[1]: *** [CMakeFiles/Makefile2:678: CMakeFiles/luajit.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
[  0%] Building C object shmif/CMakeFiles/arcan_shmif_int.dir/arcan_shmif_sub.c.o
[  0%] Building C object shmif/CMakeFiles/arcan_shmif_int.dir/arcan_shmif_evpack.c.o
[  0%] Building C object CMakeFiles/arcan_db.dir/engine/arcan_db.c.o
[  1%] Building C object shmif/CMakeFiles/arcan_shmif_int.dir/__/engine/arcan_trace.c.o
[  1%] Building C object shmif/CMakeFiles/arcan_shmif_int.dir/arcan_shmif_debugif.c.o
[  1%] Building C object CMakeFiles/arcan_db.dir/platform/posix/warning.c.o
[  2%] Building C object CMakeFiles/arcan_db.dir/platform/posix/dbpath.c.o
[  2%] Building C object CMakeFiles/arcan_db.dir/platform/stub/mem.c.o
[  2%] Building C object shmif/CMakeFiles/arcan_shmif_int.dir/__/platform/posix/shmemop.c.o
[  2%] Linking C executable arcan_db
[  3%] Building C object shmif/CMakeFiles/arcan_shmif.dir/arcan_shmif_sub.c.o
[  3%] Building C object shmif/CMakeFiles/arcan_shmif_int.dir/__/platform/posix/warning.c.o
[  3%] Built target arcan_db
[  3%] Building C object shmif/CMakeFiles/arcan_shmif_int.dir/__/platform/posix/fdpassing.c.o
[  4%] Building C object shmif/CMakeFiles/arcan_shmif_int.dir/__/platform/posix/random.c.o
[  4%] Building C object shmif/CMakeFiles/arcan_shmif.dir/arcan_shmif_evpack.c.o
[  4%] Building C object shmif/CMakeFiles/arcan_shmif_int.dir/__/platform/posix/fdscan.c.o
[  4%] Building C object shmif/CMakeFiles/arcan_shmif_int.dir/__/platform/posix/time.c.o
[  4%] Building C object shmif/CMakeFiles/arcan_shmif_int.dir/__/platform/posix/sem.c.o
[  4%] Building C object shmif/CMakeFiles/arcan_shmif.dir/__/engine/arcan_trace.c.o
[  4%] Building C object shmif/CMakeFiles/arcan_shmif.dir/arcan_shmif_debugif.c.o
[  4%] Building C object shmif/CMakeFiles/arcan_shmif.dir/__/platform/posix/shmemop.c.o
[  5%] Linking C static library libarcan_shmif.a
[  5%] Built target arcan_shmif_int
[  6%] Building C object shmif/CMakeFiles/arcan_shmif.dir/__/platform/posix/warning.c.o
[  6%] Building C object shmif/CMakeFiles/arcan_shmif.dir/__/platform/posix/fdpassing.c.o
[  6%] Building C object shmif/CMakeFiles/arcan_shmif.dir/__/platform/posix/random.c.o
[  6%] Building C object shmif/CMakeFiles/arcan_shmif.dir/__/platform/posix/fdscan.c.o
[  7%] Building C object shmif/CMakeFiles/arcan_shmif.dir/__/platform/posix/time.c.o
[  7%] Building C object shmif/CMakeFiles/arcan_shmif.dir/__/platform/posix/sem.c.o
[  7%] Linking C shared library libarcan_shmif.so
[  7%] Built target arcan_shmif
make: *** [Makefile:149: all] Error 2
builder for '/nix/store/n7zi9mh5qx70vbghnj5cy1ifj78g5lx6-arcan-master.drv' failed with exit code 2
error: build of '/nix/store/n7zi9mh5qx70vbghnj5cy1ifj78g5lx6-arcan-master.drv' failed