Steps to reproduce:
1. Install Fedora 36.
2. Install development packages («dnf group install "C Development Tools and Libraries" "Development Tools"»)
3. git clone https://git.maneage.org/project.git
4. cd project
5. ./project configure
6. ./project make -j8

Expected result:
PDF is built without errors

Actual result:
libnsl.so.1 => not found

Output written on paper.pdf (3 pages, 200528 bytes).
Transcript written on paper.log.
biber: error while loading shared libraries: libnsl.so.1: cannot open shared object file: No such file or directory
make: * [reproduce/analysis/make/paper.mk:110: [...]maneage-build/analysis/tex/build/paper.bbl] Error 127

$ ldd biber
linux-vdso.so.1 (0x00007ffe8afa6000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fda45191000)
libnsl.so.1 => not found
libdl.so.2 => /lib64/libdl.so.2 (0x00007fda4518c000)
libm.so.6 => /lib64/libm.so.6 (0x00007fda450ae000)
libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007fda45074000)
libutil.so.1 => /lib64/libutil.so.1 (0x00007fda4506d000)
libc.so.6 => /lib64/libc.so.6 (0x00007fda44e00000)
/lib64/ld-linux-x86-64.so.2 (0x00007fda451b1000)

In high-level.mk, I find:

1900 # Note that Biber needs to link with libraries like libnsl. However, we
1901 # don't currently build biber from source. So we can't choose the library
1902 # version. But we have the source and build instructions for the 'nsl'
1903 # library. When we later build biber from source, we can easily use them.

Not sure whether the expectation is that the library should be built later on but currently is not.

As a workaround, "dnf install libnsl" solved the problem.