You probably need to enable the `CRB` repo as that's where the package exists.
You can do this with `sudo dnf config-manager --enable crb`
[jonathan@jon-home ~]$ dnf info libnghttp2-devel
Last metadata expiration check: 0:00:06 ago on Mon 19 May 2025 09:34:07 AM CDT.
Available Packages
Name : libnghttp2-devel
Version : 1.43.0
Release : 6.el9
Architecture : i686
Size : 52 k
Source : nghttp2-1.43.0-6.el9.src.rpm
Repository : crb
Summary : Files needed for building applications with libnghttp2
URL : https://nghttp2.org/
License : MIT
Description : The libnghttp2-devel package includes libraries and header files needed
: for building applications with libnghttp2.
Name : libnghttp2-devel
Version : 1.43.0
Release : 6.el9
Architecture : x86_64
Size : 52 k
Source : nghttp2-1.43.0-6.el9.src.rpm
Repository : crb
Summary : Files needed for building applications with libnghttp2
URL : https://nghttp2.org/
License : MIT
Description : The libnghttp2-devel package includes libraries and header files needed
: for building applications with libnghttp2.
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dnf config-manager --enable crb
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