PackageWizard() breaks if git user credentials are not set globally

[szteven]

Fresh Linux install, with git user.email and user.name not set globally (yet). This breaks PackageWizard() as below:

gap> PackageWizard();
Welcome to the GAP PackageMaker Wizard.
I will now guide you step-by-step through the package
creation process by asking you some questions.

What is the name of the package? foobarpackage
Enter a short (one sentence) description of your package: A package for Foos and Bars.
Shall I prepare your new package for GitHub? [Y/n] Y
Do you want to use GitHubPagesForGAP? [Y/n] Y
Do you want to use GitHubActions and Codecov? [Y/n] Y
I need to know the URL of the GitHub repository.
It is of the form https://github/USER/REPOS.
What is USER (typically your GitHub username)? szteven
What is REPOS, the repository name? [foobarpackage]
 (1)   No
 (2)   Yes, written in C
 (3)   Yes, written in C++
Shall your package provide a GAP kernel extension? [1]

Next I will ask you about the package authors and maintainers.

Last name? Foo
First name(s)? Bar
Is this one of the package authors? [Y/n] Y
Is this a package maintainer? [Y/n] Y
Email? foobar@example.com
WWWHome?
Institution?
Place?
PostalAddress?
Add another person? [y/N] N
Creating the git repository...
Initialized empty Git repository in /home/istvan/.gap/pkg/foobarpackage/.git/
Author identity unknown

*** Please tell me who you are.

Run

  git config --global user.email "you@example.com"
  git config --global user.name "Your Name"

to set your account's default identity.
Omit --global to set the identity only in this repository.

fatal: unable to auto-detect email address (got 'istvan@fedora.(none)')
Error, Failed to commit files to git repository at /home/istvan/.gap/pkg/PackageMaker/gap/PackageMaker.gi:355 called from
RunGit( [ "commit", "-m", "initial import" ], "Failed to commit files to git repository" ); at /home/istvan/.gap/pkg/PackageMaker/gap/PackageMaker.gi:366 called from
CreateGitRepository( dir, github ); at /home/istvan/.gap/pkg/PackageMaker/gap/PackageMaker.gi:737 called from
<function "PackageWizard">( <arguments> )
 called from read-eval loop at *stdin*:3
you can 'quit;' to quit to outer loop, or
you can 'return;' to continue
brk>