nextpnr-xilinx: `bbaexport.py` failure

[ajelinski]

The CI fails to build nexpnr-xilinx: https://github.com/hdl/conda-eda/runs/5446064939?check_suite_focus=true#step:4:1613

  + pypy3 xilinx/python/bbaexport.py --device xc7a35tcsg324-1 --bba /home/runner/work/conda-eda/conda-eda/workdir/conda-env/conda-bld/nextpnr-xilinx_1646646241146/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/share/nextpnr-xilinx/xc7a35tcsg324-1.bba
  Traceback (most recent call last):
    File "xilinx/python/bbaexport.py", line 350, in <module>
      main()
    File "xilinx/python/bbaexport.py", line 31, in main
      d = import_device(args.device, xraydb_root, metadata_root)
    File "/home/runner/work/conda-eda/conda-eda/workdir/conda-env/conda-bld/nextpnr-xilinx_1646646241146/work/xilinx/python/xilinx_device.py", line 458, in import_device
      with open(prjxray_root + "/" + fabricname + "/tilegrid.json") as gf:
  FileNotFoundError: [Errno 2] No such file or directory: '/home/runner/work/conda-eda/conda-eda/workdir/conda-env/conda-bld/nextpnr-xilinx_1646646241146/work/xilinx/python/../external/prjxray-db/artix7/xc7a35t/tilegrid.json'

FWIW the breaking change was introduced to adjust to prjxray changes: https://github.com/gatecat/nextpnr-xilinx/commit/565588a69ea95a52f7c7592f4ed81d9bef6cfb60 so I guess it should also be looked into.

I'm going to disable nextpnr-xilinx job to fix the CI for other packages.

[proppy]

manually set the main label on all the ci-master/ci-HEAD builds, back from the latest published main (because I also needed the intermediate versions) for the following packages (using the anaconda ui):

• magic
• netgen
• openroad
• open_pdks.sky130a

[proppy]

only set the latest build of yosys with main, as I wasn't sure if publishing all the intermediate version was desirable (/cc @PiotrZierhoffer ?)

[PiotrZierhoffer]

@proppy not really, we're mostly interested in the latest build