dev-libs/librepo: fix USE=doc

Actually install documentation when the doc flag is enabled.

Closes: https://bugs.gentoo.org/943534
Signed-off-by: Takuya Wakazono <pastalian46@gmail.com>

dev-libs/librepo/librepo-1.19.0-r1.ebuild

@@ -41,6 +41,9 @@ src_prepare() {
 
 	# respect temp directory during tests, bug #924463
 	sed -i "s|/tmp/|${T}/|" tests/testsys.h || die
+
+	# disable python docs
+	sed -i "/python/d" doc/CMakeLists.txt || die
 }
 
 src_configure() {
@@ -55,3 +58,13 @@ src_configure() {
 	)
 	cmake_src_configure
 }
+
+src_compile() {
+	cmake_src_compile
+	use doc && cmake_src_compile doc-c
+}
+
+src_install() {
+	use doc && HTML_DOCS=( "${BUILD_DIR}"/doc/c/html/. )
+	cmake_src_install
+}