doc/manual: use `nixos-render-docs`

Now that all the DocBook documentation is gone, we can switch to the
new NixOS documentation generator. No meaningful change in HTML output,
except that I removed the rather pointless preface and changed the
title accordingly. Manual page output is greatly improved; it was
kind of broken before. The `sed` hack is pretty gross but I have
confirmed that nixpkgs will be happy to accept a PR to make things
a little more customizable.

This also drops the `manual` alias (deprecated in nixpkgs in 2018
and imported into nix-darwin), and `manualEpub` (because the NixOS
documentation generator doesn't support it and also nobody wants this
as an ebook).

1 files changed, 0 insertions, 1 deletions

diff --git a/release.nix b/release.nix
index 56a0663..f5a9335 100644
--- a/release.nix
+++ b/release.nix
@@ -89,7 +89,6 @@ let
     };
 
     manualHTML = buildFromConfig ({ ... }: { }) (config: config.system.build.manual.manualHTML);
-    manualEpub = buildFromConfig ({ ... }: { }) (config: config.system.build.manual.manualEpub);
     manpages = buildFromConfig ({ ... }: { }) (config: config.system.build.manual.manpages);
     options = buildFromConfig ({ ... }: { }) (config: config.system.build.manual.optionsJSON);