Building ATS: Unable to get file status /etc/scl/conf/devtoolset-7: No such file or directory

[zrhoffman]

I'm submitting a ...

• bug report

Traffic Control components affected ...

• Traffic Server (Transitive Source Build)

Current behavior:

ATS fails to build when using pkg.

Expected behavior:

ATS should build successfully.

Minimal reproduction of the problem with instructions:

[user@computer trafficcontrol]$ ./pkg -vo ats
Building ats.
Pulling ats ... 
Pulling ats ... done
Creating build_ats_run ... 
Creating build_ats_run ... done
Building ats_build.
Building ats_build
[...]
Creating _tsb_ats_build_run ... 
Creating _tsb_ats_build_run ... done
Unable to get file status /etc/scl/conf/devtoolset-7: No such file or directory
3
Failed to build ats_build.
Results in 'dist':
total 0
Failed to build ats.
Results in 'dist':
total 0