qhull: 2016.1 -> 2020.2

[teto]

useful to fix nix-community/poetry2nix#280.

Motivation for this change

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

[r-rmcgibbo]

Result of nixpkgs-review pr 120531 at a14130bf run on aarch64-linux 1

15 packages marked as broken and skipped:

• grass
• octave-jit
• openems
• openspace
• python38Packages.geopandas
• python38Packages.osmnx
• python38Packages.pygmt
• python38Packages.python-csxcad
• python38Packages.python-openems
• python39Packages.geopandas
• ...

3 packages failed to build:

• python38Packages.cartopy
• python38Packages.fiona
• python39Packages.fiona

29 packages skipped due to time constraints:

• apacheHttpdPackages.mod_tile (apacheHttpdPackages_2_4.mod_tile)
• cloudcompare
• gama
• gplates
• librsb
• mapnik
• merkaartor
• meshlab
• minc_widgets
• mysql-workbench
• ...

11 packages built successfully:

• gdal (python38Packages.gdal)
• gdal_2
• libLAS
• mapproxy
• python38Packages.labelbox
• python38Packages.rasterio
• worldengine-cli (python38Packages.worldengine)
• python39Packages.labelbox
• python39Packages.rasterio
• pytrainer
• qhull

Note that build failures may predate this PR, and could be nondeterministic or hardware dependent.
Please exercise your independent judgement.

---

Result of nixpkgs-review pr 120531 at a14130bf run on x86_64-linux 1

10 packages marked as broken and skipped:

• grass
• octave-jit
• octavePackages.fem-fenics
• octavePackages.vibes
• octavePackages.vrml
• openspace
• python38Packages.geopandas
• python38Packages.osmnx
• python39Packages.geopandas
• python39Packages.osmnx

100 packages skipped due to time constraints:

• apacheHttpdPackages.mod_tile (apacheHttpdPackages_2_4.mod_tile)
• cloudcompare
• gama
• gplates
• librsb
• mapnik
• merkaartor
• meshlab
• minc_widgets
• mysql-workbench
• ...

18 packages built successfully:

• gdal (python38Packages.gdal)
• gdal_2
• gmt
• libLAS
• mapproxy
• python38Packages.cartopy
• python38Packages.fiona
• python38Packages.labelbox
• python38Packages.pygmt
• python38Packages.rasterio
• worldengine-cli (python38Packages.worldengine)
• python39Packages.fiona
• python39Packages.labelbox
• python39Packages.pygmt
• python39Packages.rasterio
• pytrainer
• qhull
• udig