diff --git a/docs/.gitignore b/docs/.gitignore
--- a/docs/.gitignore
+++ b/docs/.gitignore
@@ -1,3 +1,4 @@
 *-stamp
 _build/
 /swh-*
+sources/
diff --git a/docs/Makefile b/docs/Makefile
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -3,7 +3,7 @@
 SOURCEDIR = .
 BUILDDIR = _build
 HTMLDIR = $(BUILDDIR)/html
-SWHPKGDIR = `python3 -c 'import swh; print(swh.__path__[0])'`
+SWHPKGDIR = sources/swh/
 
 INSTALL_HOST = pergamon.internal.softwareheritage.org
 INSTALL_DIR = /srv/softwareheritage/docs/webroot/devel
@@ -27,8 +27,8 @@
 	touch $@
 
 apidoc: apidoc-stamp
-apidoc-stamp: images-stamp
-	$(SPHINXAPIDOC) $(APIDOC_OPTS) -o $(APIDOC_DIR) $(SWHPKGDIR) $(APIDOC_SWH_EXCLUDES)
+apidoc-stamp: links-stamp images-stamp
+	$(SPHINXAPIDOC) --implicit-namespaces $(APIDOC_OPTS) -o $(APIDOC_DIR) $(SWHPKGDIR) $(APIDOC_SWH_EXCLUDES)
 	touch $@
 
 images-stamp:
diff --git a/docs/bin/ln-sphinx-subprojects b/docs/bin/ln-sphinx-subprojects
--- a/docs/bin/ln-sphinx-subprojects
+++ b/docs/bin/ln-sphinx-subprojects
@@ -2,6 +2,7 @@
 set -e
 
 create_links () {
+    mkdir -p sources/swh/
     for pymodule in $(cd ../../ && bin/ls-py-modules) ; do
         if [ "$pymodule" = 'swh-docs' ] ; then
             continue
@@ -9,6 +10,9 @@
         if [ ! -e "$pymodule" -a -d "../../${pymodule}/docs" ] ; then
             ln -s "../../${pymodule}/docs" "$pymodule"
         fi
+        if [ -d "../../${pymodule}/swh" ] ; then
+            cp -fr --link "../../${pymodule}/swh/" "sources/"
+        fi
     done
 }
 
@@ -21,6 +25,7 @@
             rm "$pymodule"
         fi
     done
+    rm -rf sources
 }
 
 if [ "$1" = "--remove" ] ; then