The issue with its inclusion in the manual has been side-stepped by
matching on the platforms in supports.

It looks like it would be a trivial fix with
`-Wno-shift-negative-value`, but in the end it fails with:

```
[100%] Linking C executable aften
libaften_static.a(a52enc.o): In function `aften_encode_init':
a52enc.c:(.text+0x303c): undefined reference to `apply_simd_restrictions'
collect2: error: ld returned 1 exit status
```

So it looks like it's not simply a warning issue.

 * https://hydra.nixos.org/build/84910540

```
Making check in eigen
make[1]: Entering directory '/build/gsl-1.16/eigen'
make  test
make[2]: Entering directory '/build/gsl-1.16/eigen'
gcc -DHAVE_CONFIG_H -I. -I.. -I..    -g -O2 -c test.c
/nix/store/bsb6596kk4fp20hyl9yl55xwv1ax4b6s-bash-4.4-p23/bin/bash ../libtool  --tag=CC   --mode=link gcc  -g -O2   -o test test.o libgsleigen.la  ../test/libgsltest.la ../linalg/libgsllinalg.la ../permutation/libgslpermutation.la ../blas/libgslblas.la ../cblas/libgslcblas.la ../matrix/libgslmatrix.la ../vector/libgslvector.la ../block/libgslblock.la  ../complex/libgslcomplex.la ../ieee-utils/libgslieeeutils.la ../sys/libgslsys.la ../err/libgslerr.la ../utils/libutils.la ../rng/libgslrng.la ../sort/libgslsort.la -lm
libtool: link: gcc -g -O2 -o .libs/test test.o  ./.libs/libgsleigen.a ../test/.libs/libgsltest.a ../linalg/.libs/libgsllinalg.a ../permutation/.libs/libgslpermutation.a ../blas/.libs/libgslblas.a ../cblas/.libs/libgslcblas.so ../matrix/.libs/libgslmatrix.a ../vector/.libs/libgslvector.a ../block/.libs/libgslblock.a ../complex/.libs/libgslcomplex.a ../ieee-utils/.libs/libgslieeeutils.a ../sys/.libs/libgslsys.a ../err/.libs/libgslerr.a ../utils/.libs/libutils.a ../rng/.libs/libgslrng.a ../sort/.libs/libgslsort.a -lm -Wl,-rpath -Wl,/nix/store/rz7sjaxwm3qf6nk9kk90v1qf81y1s62v-gsl-1.16/lib
make[2]: Leaving directory '/build/gsl-1.16/eigen'
make  check-TESTS
make[2]: Entering directory '/build/gsl-1.16/eigen'
make[3]: Entering directory '/build/gsl-1.16/eigen'
FAIL: test
make[4]: Entering directory '/build/gsl-1.16/eigen'
make[4]: Nothing to be done for 'all'.
make[4]: Leaving directory '/build/gsl-1.16/eigen'
====================================
   gsl 1.16: eigen/test-suite.log
====================================

.. contents:: :depth: 2

FAIL: test
==========

FAIL: herm random, normalized(1), unsorted (0.999999999999999112 observed vs 1 expected) [117761]
FAIL: herm random, normalized(2), val/asc (0.999999999999999112 observed vs 1 expected) [117789]
FAIL: herm random, normalized(0), val/desc (0.999999999999999112 observed vs 1 expected) [117811]
FAIL: herm random, normalized(1), abs/asc (0.999999999999999112 observed vs 1 expected) [117836]
FAIL: herm random, normalized(1), abs/desc (0.999999999999999112 observed vs 1 expected) [117860]

```

This is due to glucose not building.

Between 2b45037 and the current
revision, the semantics behind "platforms" changed, and removing the
"aarch64-linux" string doesn't work anymore to filter it out.

Instead, blacklist the platform using the (comparatively) new
badPlatforms.

Furthermore, this package needs to either be dropped or updated. The
version packaged is old, and the project has been abandoned by upstream.

There is no "arm64" machine, and using "arm32le" does not work.

openbabel/openbabel#1689

…s-part-1

aarch64: ZHF for aarch64 (1/??)