diff --git a/Makefile.local b/Makefile.local
--- a/Makefile.local
+++ b/Makefile.local
@@ -8,9 +8,9 @@
 	tox -vv -r -e sphinx-dev
 
 pip-install-swh-dev:
-	python3 -m pip install .
-	python3 -m pip install pifpaf
+	python3 -m pip install --no-build-isolation .
+	python3 -m pip install --no-build-isolation setuptools-scm pifpaf
 	sed 's/#.*$$//;/^$$/d' requirements-swh-dev.txt | \
 	while IFS= read -r package; do \
-	  python3 -m pip install $$package ; \
+	  python3 -m pip install --no-build-isolation $$package ; \
 	done
diff --git a/requirements-swh-dev.txt b/requirements-swh-dev.txt
--- a/requirements-swh-dev.txt
+++ b/requirements-swh-dev.txt
@@ -1,34 +1,32 @@
 # Add here internal Software Heritage dependencies, one per line.
 # Dependencies need to be ordered in a way that ensure only
 # development versions will be used (not the release ones hosted on PyPI).
-#
-# This is NOT in alphabetical order
 
-../swh-core[http,db,logging]
-../swh-auth[django]
-../swh-model
-../swh-journal
-../swh-counters
-../swh-objstorage[testing]
-../swh-storage
-../swh-objstorage-replayer
-../swh-scheduler[simulator]
-../swh-deposit[server]
-../swh-graph
-../swh-icinga-plugins
-../swh-indexer
-../swh-lister
-../swh-loader-core
-../swh-loader-bzr
-../swh-loader-git
-../swh-loader-mercurial
-../swh-loader-svn
-../swh-loader-cvs
-../swh-perfecthash
-../swh-scrubber
-../swh-search
-../swh-vault
-../swh-web
-../swh-web-client
-../swh-scanner
-../swh-fuse
+swh.auth[django] @ file://${ENVDIR}/swh-auth/
+swh.core[http,db,logging] @ file://${ENVDIR}/swh-core/
+swh.counters @ file://${ENVDIR}/swh-counters/
+swh.deposit[server] @ file://${ENVDIR}/swh-deposit/
+swh.fuse @ file://${ENVDIR}/swh-fuse/
+swh.graph @ file://${ENVDIR}/swh-graph/
+swh.icinga.plugins @ file://${ENVDIR}/swh-icinga-plugins/
+swh.indexer @ file://${ENVDIR}/swh-indexer/
+swh.journal @ file://${ENVDIR}/swh-journal/
+swh.lister @ file://${ENVDIR}/swh-lister/
+swh.loader.bzr @ file://${ENVDIR}/swh-loader-bzr/
+swh.loader.core @ file://${ENVDIR}/swh-loader-core/
+swh.loader.cvs @ file://${ENVDIR}/swh-loader-cvs/
+swh.loader.git @ file://${ENVDIR}/swh-loader-git/
+swh.loader.mercurial @ file://${ENVDIR}/swh-loader-mercurial/
+swh.loader.svn @ file://${ENVDIR}/swh-loader-svn/
+swh.model @ file://${ENVDIR}/swh-model/
+swh.objstorage.replayer @ file://${ENVDIR}/swh-objstorage-replayer/
+swh.objstorage[testing] @ file://${ENVDIR}/swh-objstorage/
+swh.perfecthash @ file://${ENVDIR}/swh-perfecthash/
+swh.scanner @ file://${ENVDIR}/swh-scanner/
+swh.scheduler[simulator] @ file://${ENVDIR}/swh-scheduler/
+swh.scrubber @ file://${ENVDIR}/swh-scrubber/
+swh.search @ file://${ENVDIR}/swh-search/
+swh.storage @ file://${ENVDIR}/swh-storage/
+swh.vault @ file://${ENVDIR}/swh-vault/
+swh.web @ file://${ENVDIR}/swh-web/
+swh.web.client @ file://${ENVDIR}/swh-web-client/
diff --git a/tox.ini b/tox.ini
--- a/tox.ini
+++ b/tox.ini
@@ -19,11 +19,11 @@
   {envpython} -m pifpaf run postgresql -- make -C docs {posargs:html}
 
 [testenv:sphinx-dev]
-whitelist_externals = make
-# workaround really long dependencies installation due to the
-# new pip resolver and its backtracking processes
-install_command = make pip-install-swh-dev {packages}
+deps =
+  pifpaf
+  -r requirements-swh-dev.txt
 setenv =
+  ENVDIR = {toxinidir}/..
   SWHPKGDIR = {envsitepackagesdir}/swh
 commands =
   {envpython} -m pifpaf run postgresql -- make -C sysadm {posargs:html}