Configure.pl fails on a clean nqp :/

output

$ git clone git@github.com:perl6/nqp.git
Cloning into 'nqp'...
remote: Counting objects: 29924, done.
remote: Compressing objects: 100% (8724/8724), done.
remote: Total 29924 (delta 20448), reused 29724 (delta 20263)
Receiving objects: 100% (29924/29924), 50.78 MiB | 10.82 MiB/s, done.
Resolving deltas: 100% (20448/20448), done.

$ cd nqp/

$ perl Configure.pl --gen-parrot 
sh: /home/masak/ours/nqp/install/bin/parrot: No such file or directory
Cloning into 'parrot'...
remote: Counting objects: 409754, done.
remote: Compressing objects: 100% (92877/92877), done.
remote: Total 409754 (delta 307138), reused 408801 (delta 306288)
Receiving objects: 100% (409754/409754), 99.27 MiB | 8.14 MiB/s, done.
Resolving deltas: 100% (307138/307138), done.
Note: checking out 'RELEASE_5_2_0'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b new_branch_name

HEAD is now at dfc3d7c... Prepare for the 5.2.0 release

Configuring Parrot ...
/usr/bin/perl Configure.pl --optimize --prefix="/home/masak/ours/nqp/install"
Relative path given to --prefix, please pass an absolute path at lib/Parrot/Configure/Options.pm line 98.
Command failed (status 65280): /usr/bin/perl Configure.pl --optimize --prefix="/home/masak/ours/nqp/install"