294f667121
There are no new releases of sqldeveloper v17/v18 and I don't think that we should keep obviously unmaintained software that interacts with database systems. I removed `sqldeveloper_18` and `pkgs.sqldeveloper` now points to version 19.4. Unfortunately I had to drop darwin support as JavaFX is required for 19.4 which is part of the `oraclejdk` which isn't packaged for darwin yet. For further information please refer to the release notes: https://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/sqldev-relnotes-194-5908846.html
To build the manual, you need Nix installed on your system (no need
for NixOS). To install Nix, follow the instructions at
https://nixos.org/nix/download.html
When you have Nix on your system, in the root directory of the project
(i.e., `nixpkgs`), run:
nix-build nixos/release.nix -A manual.x86_64-linux
When this command successfully finishes, it will tell you where the
manual got generated.