home/packages: add forester

this was much too much work. to summarise:
- ocamlc is weird and does not at all play nice with nix
- nixpkgs.ocamlPackages seems to not have any good way to deal with
  multiple package versions, and forester needs several different
  versions than are in nixpkgs
- forester itself has a flake which one is supposed to use with Nix; it
  uses tweag's opam-nix construct
- which for some bizarre reason cannot be imported the way I import all
  my other flakes, and I do not understand why
- so I gave up for now and import it via flake-compat, unfortunately
  tying me to an old nixpkgs pin (~June), which hopefully does not
  influence too much of the output
- forester's flake's default output is a cross-compiled musl version (???)
- so use the one in legacyPackages instead

1 files changed, 1 insertions, 0 deletions

diff --git a/home/packages.nix b/home/packages.nix
index 415d963..2bdee84 100644
--- a/home/packages.nix
+++ b/home/packages.nix
@@ -30,6 +30,7 @@ in
     wineWowPackages.full sops xdg-utils exiftool
     mercurial darcs git-annex-remote-remarkable2 git-who
     rlwrap
+    inputs.ocaml-forester.legacyPackages.${system}.forester
     # graphical utils
     kitty
     # gnss things