"Install" button needs feedback; downloads slow

[Tristan Croll]

The following bug report has been submitted:
Platform:        Linux-3.10.0-1127.13.1.el7.x86_64-x86_64-with-centos-7.8.2003-Core
ChimeraX Version: 1.0 (2020-06-04 23:15:07 UTC)
Description
(Reported to me by a colleague, whose downloads from your server were extremely slow today for some reason):

- after clicking the "Install" button for a bundle in the ToolShed, there's no clear indicator that anything's happening, and the Install button remains active. He ended up clicking it three times (due to the download time being multiple minutes), which triggered three simultaneous instances of the bundle installation.

- while download of the primary bundle happens in the background, downloading of any dependencies (e.g. Clipper) blocks the main thread until the download's done (again, multiple minutes in this case, making it look like ChimeraX had hung and causing him to kill the process).

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  
Successfully installed 'ChimeraX_ISOLDE-1.0rc1-cp37-cp37m-linux_x86_64.whl'  
Looking in indexes: https://pypi.org/simple,
https://cxtoolshed.rbvi.ucsf.edu/pypi/  
Processing
./.cache/ChimeraX/1.0/installers/ChimeraX_ISOLDE-1.0rc1-cp37-cp37m-linux_x86_64.whl  
Requirement already satisfied, skipping upgrade: ChimeraX-
Core~=1.0rc202005052344 in /opt/UCSF/ChimeraX/lib/python3.7/site-packages
(from ChimeraX-ISOLDE==1.0rc1) (1.0)  
Requirement already satisfied, skipping upgrade: ChimeraX-Clipper~=0.13.0 in
./.local/share/ChimeraX/1.0/site-packages (from ChimeraX-ISOLDE==1.0rc1)
(0.13.0)  
Requirement already satisfied, skipping upgrade: ChimeraX-Atomic>=1.0 in
/opt/UCSF/ChimeraX/lib/python3.7/site-packages (from ChimeraX-ISOLDE==1.0rc1)
(1.0)  
Requirement already satisfied, skipping upgrade: ChimeraX-Arrays~=1.0 in
/opt/UCSF/ChimeraX/lib/python3.7/site-packages (from ChimeraX-ISOLDE==1.0rc1)
(1.0)  
Requirement already satisfied, skipping upgrade: ChimeraX-Graphics~=1.0 in
/opt/UCSF/ChimeraX/lib/python3.7/site-packages (from ChimeraX-
Atomic>=1.0->ChimeraX-ISOLDE==1.0rc1) (1.0)  
Requirement already satisfied, skipping upgrade: ChimeraX-Geometry~=1.0 in
/opt/UCSF/ChimeraX/lib/python3.7/site-packages (from ChimeraX-
Atomic>=1.0->ChimeraX-ISOLDE==1.0rc1) (1.0)  
Installing collected packages: ChimeraX-ISOLDE  
Attempting uninstall: ChimeraX-ISOLDE  
Found existing installation: ChimeraX-ISOLDE 1.0rc1  
Uninstalling ChimeraX-ISOLDE-1.0rc1:  
Successfully uninstalled ChimeraX-ISOLDE-1.0rc1  
Successfully installed ChimeraX-ISOLDE-1.0rc1  
Lock 140040784006352 acquired on
/home/tic20/.cache/ChimeraX/1.0/toolshed/bundle_info.cache.lock  
Lock 140040784006352 released on
/home/tic20/.cache/ChimeraX/1.0/toolshed/bundle_info.cache.lock  
  

WARNING: You are using pip version 20.1; however, version 20.1.1 is available.  
You should consider upgrading via the '/usr/bin/chimerax -m pip install
--upgrade pip' command.  
  




OpenGL version: 3.3.0 NVIDIA 450.51.05
OpenGL renderer: TITAN Xp/PCIe/SSE2
OpenGL vendor: NVIDIA Corporation
Manufacturer: Dell Inc.
Model: Precision T5600
OS: CentOS Linux 7 Core
Architecture: 64bit ELF
CPU: 32 Intel(R) Xeon(R) CPU E5-2687W 0 @ 3.10GHz
Cache Size: 20480 KB
Memory:
	              total        used        free      shared  buff/cache   available
	Mem:            62G        6.8G         46G        228M        9.6G         55G
	Swap:          4.9G          0B        4.9G

Graphics:
	03:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP102 [TITAN Xp] [10de:1b02] (rev a1)	
	Subsystem: NVIDIA Corporation Device [10de:11df]	
	Kernel driver in use: nvidia
PyQt version: 5.12.3
Compiled Qt version: 5.12.4
Runtime Qt version: 5.12.8

[Greg Couch]

Probably won't make 1.1

[Greg Couch]

Don't know what to do about the slowness. It should be possible to show a progress bar for the initial download. But any downloads of dependencies are hidden by the pip process, and yes that is blocking.

The install button feedback should be handled by the fix for #3541.

[Greg Couch]

The button on the toolshed's bundle page now says "Install", "Upgrade", "Downgrade", or "Not Compatible". After the bundle is installed, it changes to "Installed".

Also added a download progress bar in the status line area of the help viewer.