x11/wezterm: install documentation

Increases install size by ~70 MiB but there're no manpages.

x11/wezterm/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	wezterm
 DISTVERSION=	20210814-124438-54e29167
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	x11
 
 MAINTAINER=	jbeich@FreeBSD.org
@@ -546,6 +546,12 @@ CARGO_USE_GITHUB=	yes
 # XXX https://github.com/rust-lang/cargo/issues/4101
 CARGO_INSTALL_PATH=	${PLIST_FILES:Mbin/*:T}
 
+OPTIONS_DEFINE=	DOCS
+
+DOCS_BUILD_DEPENDS=	mdbook:textproc/mdbook \
+			mdbook-linkcheck:textproc/mdbook-linkcheck
+PORTDOCS=		html
+
 post-patch:
 # Extract (snapshot) version from the port instead of .tag file
 	@${ECHO_CMD} '${DISTVERSIONFULL}' >${WRKSRC}/.tag
@@ -553,6 +559,19 @@ post-patch:
 	@${REINPLACE_CMD} -e 's/"python3"/"${PYTHON_CMD:T}"/' \
 		${WRKSRC}/cargo-crates/xcb-*/build.rs
 
+do-build-DOCS-on:
+# Build HTML documentation similar to ci/build-docs.sh
+	(cd ${WRKSRC} && ${PYTHON_CMD} ci/generate-docs.py)
+	mdbook build ${WRKSRC}/docs
+	${CP} ${WRKSRC}/assets/icon/terminal.png \
+		${WRKSRC}/gh_pages/html/favicon.png
+	${CP} ${WRKSRC}/assets/icon/${PORTNAME}-icon.svg \
+		${WRKSRC}/gh_pages/html/favicon.svg
+
+do-install-DOCS-on:
+	(cd ${WRKSRC}/gh_pages && ${COPYTREE_SHARE} \
+		"${PORTDOCS:Mhtml}" ${STAGEDIR}${DOCSDIR})
+
 post-install:
 # Install assets similar to ci/deploy.sh
 .for f in ${PORTNAME}.desktop ${PORTNAME}.appdata.xml \

x11/wezterm/files/patch-docs

@@ -0,0 +1,33 @@
+Drop installation chapter as it requires network during build
+
+--- ci/generate-docs.py.orig	2021-08-14 19:44:38 UTC
++++ ci/generate-docs.py
+@@ -114,17 +114,6 @@ TOC = [
+         "wezterm",
+         "index.md",
+         children=[
+-            Page(
+-                "Install",
+-                "installation.md",
+-                children=[
+-                    Page("Windows", "install/windows.md"),
+-                    Page("macOS", "install/macos.md"),
+-                    Page("Linux", "install/linux.md"),
+-                    Page("FreeBSD", "install/freebsd.md"),
+-                    Page("Build from source", "install/source.md"),
+-                ],
+-            ),
+             Page("Features", "features.md"),
+             Page("Change Log", "changelog.md"),
+             Page(
+--- docs/contributing.md.orig	2021-08-14 19:44:38 UTC
++++ docs/contributing.md
+@@ -8,7 +8,7 @@ If you're thinking of helping out, then the following 
+ * [WezTerm on GitHub](https://github.com/wez/wezterm)
+ * [GitHub Discussions](https://github.com/wez/wezterm/discussions)
+ * [Realtime conversation with wez on Element.io/Gitter](help.html)
+-* [Building from Source](install/source.html)
++* [Building from Source](https://github.com/wez/wezterm/blob/main/docs/install/source.markdown)
+ * [Where to find things and hacking on wezterm](https://github.com/wez/wezterm/blob/master/CONTRIBUTING.md#contributing-to-wezterm)
+ 
+ I like to think that I have an open mind and I try to be open to ideas,