Toolshed uninstall failure

[Eric Pettersen]

The following bug report has been submitted:
Platform:        Darwin-18.7.0-x86_64-i386-64bit
ChimeraX Version: 1.0 (2020-06-04 23:15:07 UTC)
Description
I installed Help-1.1 into Chimera 1.0, then I tried to uninstall it.

Log:
UCSF ChimeraX version: 1.0 (2020-06-04)  
© 2016-2020 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> toolshed uninstall Help

Traceback (most recent call last):  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/metadata.py", line 732, in __init__  
self._data = json.loads(data)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/__init__.py",
line 348, in loads  
return _default_decoder.decode(s)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/decoder.py",
line 337, in decode  
obj, end = self.raw_decode(s, idx=_w(s, 0).end())  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/decoder.py",
line 355, in raw_decode  
raise JSONDecodeError("Expecting value", s, err.value) from None  
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)  
  
During handling of the above exception, another exception occurred:  
  
Traceback (most recent call last):  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/cmd_line/tool.py", line 258, in execute  
cmd.run(cmd_text)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/core/commands/cli.py", line 2805, in run  
result = ci.function(session, **kw_args)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/core/commands/toolshed.py", line 286, in toolshed_uninstall  
deps = bi.dependents(logger)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/core/toolshed/info.py", line 571, in dependents  
for d in DistributionPath().get_distributions():  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/database.py", line 213, in get_distributions  
self._generate_cache()  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/database.py", line 167, in _generate_cache  
for dist in self._yield_distributions():  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/database.py", line 148, in _yield_distributions  
metadata = Metadata(fileobj=stream, scheme='legacy')  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/metadata.py", line 742, in __init__  
scheme=scheme)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/metadata.py", line 285, in __init__  
self.read_file(fileobj)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/metadata.py", line 383, in read_file  
self.set(field, value)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/metadata.py", line 478, in set  
if not scheme.is_valid_constraint_list(value):  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/version.py", line 713, in is_valid_constraint_list  
return self.is_valid_matcher('dummy_name (%s)' % s)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/version.py", line 703, in is_valid_matcher  
self.matcher(s)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/version.py", line 104, in __init__  
r = self.parse_requirement(s)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/version.py", line 98, in parse_requirement  
return parse_requirement(s)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/util.py", line 237, in parse_requirement  
versions, _ = get_versions(s)  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/util.py", line 220, in get_versions  
raise SyntaxError('invalid constraint: %s' % ver_remaining)  
File "<string>", line None  
SyntaxError: invalid constraint:  
  
File "", line None  
SyntaxError: invalid constraint:  
  
File
"/Applications/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/distlib/util.py", line 220, in get_versions  
raise SyntaxError('invalid constraint: %s' % ver_remaining)  
  
See log for complete Python traceback.  
  




OpenGL version: 4.1 INTEL-12.10.16
OpenGL renderer: Intel(R) Iris(TM) Pro Graphics 6200
OpenGL vendor: Intel Inc.Hardware:

    Hardware Overview:

      Model Name: iMac
      Model Identifier: iMac16,2
      Processor Name: Intel Core i5
      Processor Speed: 2.8 GHz
      Number of Processors: 1
      Total Number of Cores: 4
      L2 Cache (per Core): 256 KB
      L3 Cache: 4 MB
      Memory: 16 GB
      Boot ROM Version: 232.0.0.0.0
      SMC Version (system): 2.32f20

Software:

    System Software Overview:

      System Version: macOS 10.14.6 (18G3020)
      Kernel Version: Darwin 18.7.0
      Time since boot: 5:22

Graphics/Displays:

    Intel Iris Pro Graphics 6200:

      Chipset Model: Intel Iris Pro Graphics 6200
      Type: GPU
      Bus: Built-In
      VRAM (Dynamic, Max): 1536 MB
      Vendor: Intel
      Device ID: 0x1622
      Revision ID: 0x000a
      Metal: Supported, feature set macOS GPUFamily1 v4
      Displays:
        iMac:
          Display Type: LCD
          Resolution: 1920 x 1080 (1080p FHD - Full High Definition)
          UI Looks like: 1920 x 1080
          Framebuffer Depth: 30-Bit Color (ARGB2101010)
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Rotation: Supported
          Automatically Adjust Brightness: No
          Connection Type: DisplayPort

PyQt version: 5.12.3
Compiled Qt version: 5.12.4
Runtime Qt version: 5.12.8

[Greg Couch]

This was actually a bug in distlib. The next version, > 0.31, should have the fix. In the meantime, I've patched the metadata for suds_jurko and webcolors to avoid the bug.