Cannot uninstall bundle

[Eric Pettersen]

The following bug report has been submitted:
Platform:        macOS-13.3.1-arm64-arm-64bit
ChimeraX Version: 1.7.dev202309272145 (2023-09-27 21:45:56 UTC)
Description
"toolshed uninstall" does not uninstall the bundle.

Log:
You can double click a model's Name or ID in the model panel to edit those
fields  
UCSF ChimeraX version: 1.7.dev202309272145 (2023-09-27)  
© 2016-2023 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> toolshed install
> /Users/pett/src/chimerax/src/bundles/phenix_ui/dist/ChimeraX_PhenixUI-1.2.0-py3-none-
> any.whl

No bundles were installed  
Installed ChimeraX-PhenixUI (1.2.0)  

> toolshed uninstall PhenixUI

unloading module chimerax.phenix_ui  

Errors may have occurred when running pip:  

pip standard error:  
\---  
WARNING: Skipping ChimeraX-PhenixUI as it is not installed.  
\---  

pip standard output:  
\---  
\---  

No change in list of installed bundles  

> toolshed list

List of installed bundles:  

  * AddCharge (1.5.11): Add partial charges to atoms
  * AddH (2.2.5): Add hydrogens
  * AlignmentAlgorithms (2.0.1): Sequence alignment algorithms
  * AlignmentHdrs (3.4.1): Alignment header support
  * AlignmentMatrices (2.1): Sequence alignment similarity matrices
  * Alignments (2.11.1): Sequence alignment support
  * AlphaFold (1.0): Predict or fetch AlphaFold structures
  * AltlocExplorer (1.1.1): Examine/change alternate atomic locations
  * AmberInfo (1.0): Provide information about AmberTools installation
  * Arrays (1.1): C++ library for parsing numpy arrays
  * Atomic (1.48): Atomic-structure functionality
  * AtomicLibrary (10.1): Atomic-structure C++ library
  * AtomSearch (2.0.1): 3D atom search
  * AxesPlanes (2.3.2): Depict axes or planes
  * BasicActions (1.1.2): Basic actions for user-defined specifier names
  * BILD (1.0): BILD file reader
  * BlastProtein (2.1.2): Search PDB/NR/AlphaFold using BLAST
  * BondRot (2.0.4): Bond rotation support
  * BugReporter (1.0.1): Report bugs when an error occurs
  * BuildStructure (2.10.5): Create/modify structures
  * Bumps (1.0): Find protrusions in density maps
  * ButtonPanel (1.0.1): Create custom user interface panels
  * CageBuilder (1.0.1): Build polygonal meshes for oligomeric molecular assemblies
  * CellPack (1.0): Fetch cellPACK models from web
  * Centroids (1.3.2): Depict centroid of atoms
  * ChangeChains (1.0.3): Change chain IDs
  * CheckWaters (1.3.1): Check water placement in maps
  * ChemGroup (2.0.1): Detect chemically functional groups
  * Clashes (2.2.4): Find clashes/contacts in structures
  * ColorActions (1.0.3): Simple interface for coloring objects
  * ColorGlobe (1.0): Show directional resolution colored sphere
  * ColorKey (1.5.4): Add color key to graphics
  * CommandLine (1.2.5): Command line support
  * ConnectStructure (2.0.1): Add bonds to structures that lack them
  * Contacts (1.0.1): Display chain contact maps
  * Core (1.7.dev202309272145): ChimeraX Core Package
  * CoreFormats (1.2): ChimeraX session support
  * coulombic (1.4.2): Compute/show electrostatic potential
  * Crosslinks (1.0): Analyze crosslinks
  * Crystal (1.0): Crystal symmetries
  * CrystalContacts (1.0.1): Show contacting asymmetric units in a crystal
  * DataFormats (1.2.3): Data format management
  * Dicom (1.2): Read medical imaging and segmentations in DICOM format
  * DistMonitor (1.4): Interactive distance display
  * DockPrep (1.1.2): Prepare structures for docking
  * Dssp (2.0): Compute/assign secondary structure
  * EMDB-SFF (1.0): EMDB SFF file reader
  * ESMFold (1.0): Predict or fetch ESMFold structures
  * FileHistory (1.0.1): File History Panel
  * FunctionKey (1.0.1): Assign function keys to run commands
  * Geometry (1.3): Vector and coordinate system routines
  * gltf (1.0): Read/write glTF 3d scene files
  * Graphics (1.1.1): OpenGL graphics rendering
  * Hbonds (2.4): Identify hydrogen bonds in and among structures
  * Help (1.2.2): Show ChimeraX Help
  * HKCage (1.3): Create icosahedral mesh of hexagons and pentagons
  * IHM (1.1): Integrative Hybrid Models file reader
  * ImageFormats (1.2): Support for saving images
  * IMOD (1.0): IMOD model file reader
  * IO (1.0.1): Python convenience input/output functions
  * ItemsInspection (1.0.1): Inspection of attributes of a set of items
  * IUPAC (1.0): IUPAC fetch
  * Label (1.1.8): Add text labels to graphics
  * ListInfo (1.2.1): Report attributes for selected atomic data
  * Log (1.1.6): Log support
  * LookingGlass (1.1): LookingGlass holographic display
  * Maestro (1.9.1): Maestro reader
  * Map (1.1.4): Density maps
  * MapData (2.0): Volume data file formats
  * MapEraser (1.0.1): Map eraser
  * MapFilter (2.0.1): Operations on maps
  * MapFit (2.0): Fit molecules into maps
  * MapSeries (2.1.1): Volume series
  * Markers (1.0.1): Place markers on density maps
  * Mask (1.0.2): Mask a volume to a surface
  * MatchMaker (2.1.2): Superimpose structures
  * MCopy (1.0): Copy atomic structure attributes to another structure
  * MDcrds (2.6): Molecular dynamics support
  * MedicalToolbar (1.0.2): Toolbar for medical image analysis
  * Meeting (1.0.1): Shared interactive VR sessions.
  * MLP (1.1.1): Molecular lipophilicity calculation
  * mmCIF (2.12.1): mmCIF format read/write
  * MMTF (2.2): MMTF format read/write
  * Modeller (1.5.12): Interface to Modeller
  * ModelPanel (1.4): ChimeraX Model Panel
  * ModelSeries (1.0.1): Display sequences of models one by one
  * Mol2 (2.0.3): Mol2 reader/writer
  * Mole (1.0): Open JSON tunnel files from Mole
  * Morph (1.0.2): Morph atomic structures
  * MouseModes (1.2): Provide right button mouse mode tool
  * Movie (1.0): Commands to record movies
  * Neuron (1.0): Read SWC neuron trace files
  * Nifti (1.1): Read medical images in NIfTI format
  * NRRD (1.1): Read medical images in NRRD format
  * Nucleotides (2.0.3): Create nucleotide-specific displays
  * OpenCommand (1.11): Manages 'open' command extensibility
  * PDB (2.7.2): PDB format read/write
  * PDBBio (1.0.1): PDB biological assembly fetch
  * PDBLibrary (1.0.2): C++ PDB support
  * PDBMatrices (1.0): Crystal and biological unit matrices
  * PhenixUI (1.2.0): Run model bulding calculations using Phenix
  * PickBlobs (1.0.1): Measure and color blobs
  * Positions (1.0): Read and write model position matrices
  * PresetMgr (1.1): Preset management
  * PubChem (2.1): PubChem fetch
  * ReadPbonds (1.0.1): Read in pseudobonds from a file
  * Registration (1.1.2): Register ChimeraX
  * RemoteControl (1.0): Control ChimeraX from other apps
  * RenderByAttr (1.1): Depict attribute values on structures
  * RenumberResidues (1.1): Renumber residues
  * ResidueFit (1.0.1): Display fit of residues to density map
  * RestServer (1.2): Starts REST server to execute commands from network requests
  * RNALayout (1.0): Make RNA models
  * RotamerLibMgr (4.0): Manage rotamer libraries
  * RotamerLibsDunbrack (2.0): Dunbrack rotamer library
  * RotamerLibsDynameomics (2.0): Dynameomics rotamer library
  * RotamerLibsRichardson (2.0): Richardson rotamer libraries
  * SaveCommand (1.5.1): Manages 'save' command extensibility
  * SchemeMgr (1.0): HTTP scheme management
  * SDF (2.0.1): SDF file reader
  * Segger (1.0): Segment map
  * Segment (1.0.1): Watershed segment calculation
  * SelInspector (1.0): Inspect contents of selection
  * SeqView (2.10): Sequence viewer
  * Shape (1.0.1): Make models for geometric shapes
  * Shell (1.0.1): Interactive Python shell
  * Shortcuts (1.1.1): Button and keyboard shortcuts
  * ShowSequences (1.0.2): Choose/show structure sequences
  * SideView (1.0.1): Side view of scene
  * Smiles (2.1.2): SMILES fetch
  * SmoothLines (1.0): Smooth network of lines
  * SpaceNavigator (1.0): Space Navigator device support
  * StdCommands (1.12.2): Standard commands
  * STL (1.0.1): STL file read/write
  * Storm (1.0): STORM file reader
  * StructMeasure (1.1.2): Structure measurement user interface
  * Struts (1.0.1): struts for 3D printing
  * Surface (1.0.1): Surface calculations
  * SwapAA (2.0.1): Swap amino acid
  * SwapRes (2.2.2): Swap residue side chains
  * TapeMeasure (1.0): Tape measure mouse mode
  * TaskManager (1.0): Manage background tasks in ChimeraX
  * Test (1.0): simple regression test
  * Toolbar (1.1.2): Toolbar
  * ToolshedUtils (1.2.4): Toolshed bundle utilities
  * Topography (1.0): Show a topographic surface for a 2D image
  * ToQuest (1.0): Copy scenes to VR Quest headset
  * Tug (1.0.1): Tug on atoms with molecular dynamics
  * UI (1.32.2): ChimeraX user interface
  * uniprot (2.3): UniProt database support
  * UnitCell (1.0.1): Show crystal unit cell
  * ViewDockX (1.3.1): Analyze ligand-receptor docking results
  * VIPERdb (1.0): Read Virus Particle Explorer .vdb files
  * Vive (1.1): Virtual reality headset support
  * VolumeMenu (1.0.1): Volume menu
  * VTK (1.0): Legacy VTK file reader and writer
  * WavefrontOBJ (1.0): Wavefront OBJ file read/write
  * WebCam (1.0.2): Combine camera video with graphics
  * WebServices (1.1.2): Web service and HTTP request support
  * Zone (1.0.1): Mouse mode to show atom and map zones

  




OpenGL version: 4.1 Metal - 83.1
OpenGL renderer: Apple M1 Max
OpenGL vendor: Apple

Python: 3.11.2
Locale: UTF-8
Qt version: PyQt6 6.3.1, Qt 6.3.1
Qt runtime version: 6.3.2
Qt platform: cocoa
Hardware:

    Hardware Overview:

      Model Name: Mac Studio
      Model Identifier: Mac13,1
      Model Number: Z14J0008FLL/A
      Chip: Apple M1 Max
      Total Number of Cores: 10 (8 performance and 2 efficiency)
      Memory: 32 GB
      System Firmware Version: 8422.100.650
      OS Loader Version: 8422.100.650

Software:

    System Software Overview:

      System Version: macOS 13.3.1 (a) (22E772610a)
      Kernel Version: Darwin 22.4.0
      Time since boot: 43 days, 14 hours, 59 minutes

Graphics/Displays:

    Apple M1 Max:

      Chipset Model: Apple M1 Max
      Type: GPU
      Bus: Built-In
      Total Number of Cores: 24
      Vendor: Apple (0x106b)
      Metal Support: Metal 3
      Displays:
        PHL 279P1:
          Resolution: 5120 x 2880 (5K/UHD+ - Ultra High Definition Plus)
          UI Looks like: 2560 x 1440 @ 60.00Hz
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Rotation: Supported


Installed Packages:
    alabaster: 0.7.13
    appdirs: 1.4.4
    appnope: 0.1.3
    asttokens: 2.4.0
    Babel: 2.12.1
    backcall: 0.2.0
    beautifulsoup4: 4.11.2
    blockdiag: 3.0.0
    blosc2: 2.0.0
    build: 0.10.0
    certifi: 2022.12.7
    cftime: 1.6.2
    charset-normalizer: 3.2.0
    ChimeraX-AddCharge: 1.5.11
    ChimeraX-AddH: 2.2.5
    ChimeraX-AlignmentAlgorithms: 2.0.1
    ChimeraX-AlignmentHdrs: 3.4.1
    ChimeraX-AlignmentMatrices: 2.1
    ChimeraX-Alignments: 2.11.1
    ChimeraX-AlphaFold: 1.0
    ChimeraX-AltlocExplorer: 1.1.1
    ChimeraX-AmberInfo: 1.0
    ChimeraX-Arrays: 1.1
    ChimeraX-Atomic: 1.48
    ChimeraX-AtomicLibrary: 10.1
    ChimeraX-AtomSearch: 2.0.1
    ChimeraX-AxesPlanes: 2.3.2
    ChimeraX-BasicActions: 1.1.2
    ChimeraX-BILD: 1.0
    ChimeraX-BlastProtein: 2.1.2
    ChimeraX-BondRot: 2.0.4
    ChimeraX-BugReporter: 1.0.1
    ChimeraX-BuildStructure: 2.10.5
    ChimeraX-Bumps: 1.0
    ChimeraX-BundleBuilder: 1.2.2
    ChimeraX-ButtonPanel: 1.0.1
    ChimeraX-CageBuilder: 1.0.1
    ChimeraX-CellPack: 1.0
    ChimeraX-Centroids: 1.3.2
    ChimeraX-ChangeChains: 1.0.3
    ChimeraX-CheckWaters: 1.3.1
    ChimeraX-ChemGroup: 2.0.1
    ChimeraX-Clashes: 2.2.4
    ChimeraX-ColorActions: 1.0.3
    ChimeraX-ColorGlobe: 1.0
    ChimeraX-ColorKey: 1.5.4
    ChimeraX-CommandLine: 1.2.5
    ChimeraX-ConnectStructure: 2.0.1
    ChimeraX-Contacts: 1.0.1
    ChimeraX-Core: 1.7.dev202309272145
    ChimeraX-CoreFormats: 1.2
    ChimeraX-coulombic: 1.4.2
    ChimeraX-Crosslinks: 1.0
    ChimeraX-Crystal: 1.0
    ChimeraX-CrystalContacts: 1.0.1
    ChimeraX-DataFormats: 1.2.3
    ChimeraX-Dicom: 1.2
    ChimeraX-DistMonitor: 1.4
    ChimeraX-DockPrep: 1.1.2
    ChimeraX-Dssp: 2.0
    ChimeraX-EMDB-SFF: 1.0
    ChimeraX-ESMFold: 1.0
    ChimeraX-FileHistory: 1.0.1
    ChimeraX-FunctionKey: 1.0.1
    ChimeraX-Geometry: 1.3
    ChimeraX-gltf: 1.0
    ChimeraX-Graphics: 1.1.1
    ChimeraX-Hbonds: 2.4
    ChimeraX-Help: 1.2.2
    ChimeraX-HKCage: 1.3
    ChimeraX-IHM: 1.1
    ChimeraX-ImageFormats: 1.2
    ChimeraX-IMOD: 1.0
    ChimeraX-IO: 1.0.1
    ChimeraX-ItemsInspection: 1.0.1
    ChimeraX-IUPAC: 1.0
    ChimeraX-Label: 1.1.8
    ChimeraX-ListInfo: 1.2.1
    ChimeraX-Log: 1.1.6
    ChimeraX-LookingGlass: 1.1
    ChimeraX-Maestro: 1.9.1
    ChimeraX-Map: 1.1.4
    ChimeraX-MapData: 2.0
    ChimeraX-MapEraser: 1.0.1
    ChimeraX-MapFilter: 2.0.1
    ChimeraX-MapFit: 2.0
    ChimeraX-MapSeries: 2.1.1
    ChimeraX-Markers: 1.0.1
    ChimeraX-Mask: 1.0.2
    ChimeraX-MatchMaker: 2.1.2
    ChimeraX-MCopy: 1.0
    ChimeraX-MDcrds: 2.6
    ChimeraX-MedicalToolbar: 1.0.2
    ChimeraX-Meeting: 1.0.1
    ChimeraX-MLP: 1.1.1
    ChimeraX-mmCIF: 2.12.1
    ChimeraX-MMTF: 2.2
    ChimeraX-Modeller: 1.5.12
    ChimeraX-ModelPanel: 1.4
    ChimeraX-ModelSeries: 1.0.1
    ChimeraX-Mol2: 2.0.3
    ChimeraX-Mole: 1.0
    ChimeraX-Morph: 1.0.2
    ChimeraX-MouseModes: 1.2
    ChimeraX-Movie: 1.0
    ChimeraX-Neuron: 1.0
    ChimeraX-Nifti: 1.1
    ChimeraX-NRRD: 1.1
    ChimeraX-Nucleotides: 2.0.3
    ChimeraX-OpenCommand: 1.11
    ChimeraX-PDB: 2.7.2
    ChimeraX-PDBBio: 1.0.1
    ChimeraX-PDBLibrary: 1.0.2
    ChimeraX-PDBMatrices: 1.0
    ChimeraX-PhenixUI: 1.2.0
    ChimeraX-PickBlobs: 1.0.1
    ChimeraX-Positions: 1.0
    ChimeraX-PresetMgr: 1.1
    ChimeraX-PubChem: 2.1
    ChimeraX-ReadPbonds: 1.0.1
    ChimeraX-Registration: 1.1.2
    ChimeraX-RemoteControl: 1.0
    ChimeraX-RenderByAttr: 1.1
    ChimeraX-RenumberResidues: 1.1
    ChimeraX-ResidueFit: 1.0.1
    ChimeraX-RestServer: 1.2
    ChimeraX-RNALayout: 1.0
    ChimeraX-RotamerLibMgr: 4.0
    ChimeraX-RotamerLibsDunbrack: 2.0
    ChimeraX-RotamerLibsDynameomics: 2.0
    ChimeraX-RotamerLibsRichardson: 2.0
    ChimeraX-SaveCommand: 1.5.1
    ChimeraX-SchemeMgr: 1.0
    ChimeraX-SDF: 2.0.1
    ChimeraX-Segger: 1.0
    ChimeraX-Segment: 1.0.1
    ChimeraX-SelInspector: 1.0
    ChimeraX-SeqView: 2.10
    ChimeraX-Shape: 1.0.1
    ChimeraX-Shell: 1.0.1
    ChimeraX-Shortcuts: 1.1.1
    ChimeraX-ShowSequences: 1.0.2
    ChimeraX-SideView: 1.0.1
    ChimeraX-Smiles: 2.1.2
    ChimeraX-SmoothLines: 1.0
    ChimeraX-SpaceNavigator: 1.0
    ChimeraX-StdCommands: 1.12.2
    ChimeraX-STL: 1.0.1
    ChimeraX-Storm: 1.0
    ChimeraX-StructMeasure: 1.1.2
    ChimeraX-Struts: 1.0.1
    ChimeraX-Surface: 1.0.1
    ChimeraX-SwapAA: 2.0.1
    ChimeraX-SwapRes: 2.2.2
    ChimeraX-TapeMeasure: 1.0
    ChimeraX-TaskManager: 1.0
    ChimeraX-Test: 1.0
    ChimeraX-Toolbar: 1.1.2
    ChimeraX-ToolshedUtils: 1.2.4
    ChimeraX-Topography: 1.0
    ChimeraX-ToQuest: 1.0
    ChimeraX-Tug: 1.0.1
    ChimeraX-UI: 1.32.2
    ChimeraX-uniprot: 2.3
    ChimeraX-UnitCell: 1.0.1
    ChimeraX-ViewDockX: 1.3.1
    ChimeraX-VIPERdb: 1.0
    ChimeraX-Vive: 1.1
    ChimeraX-VolumeMenu: 1.0.1
    ChimeraX-VTK: 1.0
    ChimeraX-WavefrontOBJ: 1.0
    ChimeraX-WebCam: 1.0.2
    ChimeraX-WebServices: 1.1.2
    ChimeraX-Zone: 1.0.1
    colorama: 0.4.6
    comm: 0.1.4
    contourpy: 1.1.1
    cxservices: 1.2.2
    cycler: 0.11.0
    Cython: 0.29.33
    debugpy: 1.8.0
    decorator: 5.1.1
    docutils: 0.19
    executing: 1.2.0
    filelock: 3.9.0
    fonttools: 4.42.1
    funcparserlib: 1.0.1
    glfw: 2.6.2
    grako: 3.16.5
    h5py: 3.9.0
    html2text: 2020.1.16
    idna: 3.4
    ihm: 0.38
    imagecodecs: 2023.7.10
    imagesize: 1.4.1
    ipykernel: 6.23.2
    ipython: 8.14.0
    ipython-genutils: 0.2.0
    ipywidgets: 8.1.1
    jedi: 0.18.2
    Jinja2: 3.1.2
    jupyter-client: 8.2.0
    jupyter-core: 5.3.2
    jupyterlab-widgets: 3.0.9
    kiwisolver: 1.4.5
    line-profiler: 4.0.2
    lxml: 4.9.2
    lz4: 4.3.2
    MarkupSafe: 2.1.3
    matplotlib: 3.7.2
    matplotlib-inline: 0.1.6
    msgpack: 1.0.4
    nest-asyncio: 1.5.8
    netCDF4: 1.6.2
    networkx: 3.1
    nibabel: 5.0.1
    nptyping: 2.5.0
    numexpr: 2.8.7
    numpy: 1.25.1
    openvr: 1.23.701
    packaging: 21.3
    ParmEd: 3.4.3
    parso: 0.8.3
    pep517: 0.13.0
    pexpect: 4.8.0
    pickleshare: 0.7.5
    Pillow: 10.0.0
    pip: 23.0
    pkginfo: 1.9.6
    platformdirs: 3.10.0
    prompt-toolkit: 3.0.39
    psutil: 5.9.5
    ptyprocess: 0.7.0
    pure-eval: 0.2.2
    py-cpuinfo: 9.0.0
    pycollada: 0.7.2
    pydicom: 2.3.0
    Pygments: 2.16.1
    pynrrd: 1.0.0
    PyOpenGL: 3.1.7
    PyOpenGL-accelerate: 3.1.7
    pyopenxr: 1.0.2801
    pyparsing: 3.0.9
    pyproject-hooks: 1.0.0
    PyQt6-commercial: 6.3.1
    PyQt6-Qt6: 6.3.2
    PyQt6-sip: 13.4.0
    PyQt6-WebEngine-commercial: 6.3.1
    PyQt6-WebEngine-Qt6: 6.3.2
    python-dateutil: 2.8.2
    pytz: 2023.3.post1
    pyzmq: 25.1.1
    qtconsole: 5.4.3
    QtPy: 2.4.0
    RandomWords: 0.4.0
    requests: 2.31.0
    scipy: 1.11.1
    setuptools: 67.4.0
    setuptools-scm: 7.0.5
    sfftk-rw: 0.7.3
    six: 1.16.0
    snowballstemmer: 2.2.0
    sortedcontainers: 2.4.0
    soupsieve: 2.5
    sphinx: 6.1.3
    sphinx-autodoc-typehints: 1.22
    sphinxcontrib-applehelp: 1.0.7
    sphinxcontrib-blockdiag: 3.0.0
    sphinxcontrib-devhelp: 1.0.5
    sphinxcontrib-htmlhelp: 2.0.4
    sphinxcontrib-jsmath: 1.0.1
    sphinxcontrib-qthelp: 1.0.6
    sphinxcontrib-serializinghtml: 1.1.9
    stack-data: 0.6.2
    superqt: 0.5.0
    tables: 3.8.0
    tcia-utils: 1.5.1
    tifffile: 2023.7.18
    tinyarray: 1.2.4
    tomli: 2.0.1
    tornado: 6.3.3
    traitlets: 5.9.0
    typing-extensions: 4.8.0
    tzdata: 2023.3
    urllib3: 2.0.5
    wcwidth: 0.2.6
    webcolors: 1.12
    wheel: 0.38.4
    wheel-filename: 1.4.1
    widgetsnbextension: 4.0.9

[Tom Goddard]

I reproduced this in yesterday's ChimeraX build, after installing PhenixUI and listing it with toolshed list, the uninstall says it is not installed:

toolshed uninstall PhenixUI
unloading module chimerax.phenix_ui
Errors may have occurred when running pip:
pip standard error:
---
WARNING: Skipping ChimeraX-PhenixUI as it is not installed.
---
pip standard output:
---
---
No change in list of installed bundles

[Greg Couch]

This bug is due to switching to using the Python binary for pip instead of the ChimeraX binary so source code builds would work. We set PYTHONEUSERBASE and then invoke "python -I -m pip" to isolate Python from the user's environment. And that is needed for "pip install", but PYTHONUSERBASE is ignored for "pip uninstall" and "pip list". It should be ignored in both cases if -I is given (-I ignores PYTHON environment variables). Need to rethink isolation. Perhaps emulate -I and remove normal Python environment variables explicitly from the environment, so -I isn't needed.

[Greg Couch]

Stopped using "python -I" and instead fix up environment so incompatible PYTHON* environment variables are ignored.