diff --git a/docs/Makefile b/docs/Makefile
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -21,10 +21,14 @@
 
 html: sphinx/html
 
-sphinx/html: apidoc-stamp images-stamp rec-build-stamp
+sphinx/html: links-stamp apidoc-stamp images-stamp rec-build-stamp
+
+links-stamp:
+	bin/ln-sphinx-subprojects
+	touch $@
 
 apidoc: apidoc-stamp
-apidoc-stamp: images-stamp
+apidoc-stamp: links-stamp images-stamp
 	$(SPHINXAPIDOC) --implicit-namespaces $(APIDOC_OPTS) -o $(APIDOC_DIR) $(SWHPKGDIR) $(APIDOC_SWH_EXCLUDES)
 	touch $@
 
@@ -40,6 +44,7 @@
 	touch $@
 
 clean: sphinx/clean
+	bin/ln-sphinx-subprojects --remove
 	$(MAKE) -C images clean
 	rm -f *-stamp
 	rm -f $(APIDOC_DIR)/*
diff --git a/docs/bin/ln-sphinx-subprojects b/docs/bin/ln-sphinx-subprojects
new file mode 100755
--- /dev/null
+++ b/docs/bin/ln-sphinx-subprojects
@@ -0,0 +1,31 @@
+#!/bin/bash
+set -e
+
+create_links () {
+    mkdir -p sources
+    for pymodule in $(cd ../../ && bin/ls-py-modules) ; do
+        if [ "$pymodule" = 'swh-docs' ] ; then
+            continue
+        fi
+        if [ ! -e "$pymodule" -a -d "../../${pymodule}/docs" ] ; then
+            ln -s "../../${pymodule}/docs" "$pymodule"
+        fi
+    done
+}
+
+remove_links () {
+    for pymodule in $(cd ../../ && bin/ls-py-modules) ; do
+        if [ "$pymodule" = 'swh-docs' ] ; then
+            continue
+        fi
+        if [ -L "$pymodule" ] ; then
+            rm "$pymodule"
+        fi
+    done
+}
+
+if [ "$1" = "--remove" ] ; then
+    remove_links
+else
+    create_links
+fi
diff --git a/tox.ini b/tox.ini
--- a/tox.ini
+++ b/tox.ini
@@ -17,12 +17,12 @@
   {envpython} -m pifpaf run postgresql -- make -C docs {posargs:html}
 
 [testenv:sphinx-dev]
-setenv =
-  SWHPKGDIR = {envsitepackagesdir}/swh
 deps =
   django < 3
   -rrequirements-swh-dev.txt
   pifpaf
+setenv =
+  SWHPKGDIR = {envsitepackagesdir}/swh
 commands =
   {envpython} -m pifpaf run postgresql -- make -C docs {posargs:html}