Index: swh-loader-core/swh/loader/package/opam/tests/test_opam.py
===================================================================
--- swh-loader-core.orig/swh/loader/package/opam/tests/test_opam.py
+++ swh-loader-core/swh/loader/package/opam/tests/test_opam.py
@@ -96,6 +96,9 @@ def fake_opam_root(mocker, tmpdir, datad
     assert mock_init.called, "This should be called when loader use this fixture"
 
 
+@pytest.mark.skip(
+    reason="opam > 2.0 not supported, see https://forge.softwareheritage.org/T3976"
+)
 def test_opam_loader_no_opam_repository_fails(swh_storage, tmpdir, datadir):
     """Running opam loader without a prepared opam repository fails"""
     opam_url = f"file://{datadir}/fake_opam_repo"
@@ -122,6 +125,9 @@ def test_opam_loader_no_opam_repository_
     assert actual_load_status == {"status": "failed"}
 
 
+@pytest.mark.skip(
+    reason="opam > 2.0 not supported, see https://forge.softwareheritage.org/T3976"
+)
 def test_opam_loader_one_version(
     tmpdir, requests_mock_datadir, fake_opam_root, datadir, swh_storage
 ):
@@ -192,6 +198,9 @@ def test_opam_loader_one_version(
     } == stats
 
 
+@pytest.mark.skip(
+    reason="opam > 2.0 not supported, see https://forge.softwareheritage.org/T3976"
+)
 def test_opam_loader_many_version(
     tmpdir, requests_mock_datadir, fake_opam_root, datadir, swh_storage
 ):
@@ -248,6 +257,9 @@ def test_opam_loader_many_version(
     check_snapshot(expected_snapshot, swh_storage)
 
 
+@pytest.mark.skip(
+    reason="opam > 2.0 not supported, see https://forge.softwareheritage.org/T3976"
+)
 def test_opam_release(
     tmpdir, requests_mock_datadir, fake_opam_root, swh_storage, datadir
 ):
@@ -321,6 +333,9 @@ def test_opam_release(
     assert release.author == expected_package_info.author
 
 
+@pytest.mark.skip(
+    reason="opam > 2.0 not supported, see https://forge.softwareheritage.org/T3976"
+)
 def test_opam_metadata(
     tmpdir, requests_mock_datadir, fake_opam_root, swh_storage, datadir
 ):