qt setup "not enough disk space to store temporary files" windows

qt-setup-not-enough-disk-space.md

qt setup "not enough disk space to store temporary files" windows

If the volume that the temp directory is on is not the same as the install path, then it won't let it install. See the lines in the source for it below:

https://github.com/qtproject/installer-framework/blob/master/src/libs/installer/packagemanagergui.cpp

https://www.google.com/search?q=set+temp+path+batch

To fix it you have to set the %TMP% in a command prompt and launch the installer from that command prompt.

set TMP=C:\Temp
set TEMP=C:\Temp

cd %userprofile%\Downloads
qt-unified-windows-x86-3.0.2-online.exe

Hope that helps.

For anyone may be curious, the temporary dir size checking code is moved to another place:
https://github.com/qtproject/installer-framework/blob/57c217b5aedbb3f6a84b4b4acc887e0e46263e42/src/libs/installer/packagemanagercore.cpp#L3026

For those who wants scripts only Setting the TMPDIR environment variable (Linux, UNIX) :
mkdir ~/tmp; export TMPDIR=/home/username/tmp;

It worked for me!! Thank you.