diff --git a/swh/loader/package/loader.py b/swh/loader/package/loader.py
--- a/swh/loader/package/loader.py
+++ b/swh/loader/package/loader.py
@@ -331,6 +331,11 @@
                             # FIXME: This should be release. cf. D409
                             revision = self.build_revision(
                                 p_info['raw'], uncompressed_path)
+                            if not revision:
+                                # Some artifacts are missing intrinsic metadata
+                                # skipping those
+                                continue
+
                             revision.update({
                                 'synthetic': True,
                                 'directory': directory.hash,
diff --git a/swh/loader/package/pypi/loader.py b/swh/loader/package/pypi/loader.py
--- a/swh/loader/package/pypi/loader.py
+++ b/swh/loader/package/pypi/loader.py
@@ -74,6 +74,8 @@
     def build_revision(
             self, a_metadata: Dict, uncompressed_path: str) -> Dict:
         i_metadata = extract_intrinsic_metadata(uncompressed_path)
+        if not i_metadata:
+            return {}
 
         # from intrinsic metadata
         name = i_metadata['version']
diff --git a/swh/loader/package/pypi/tests/data/https_files.pythonhosted.org/packages_86_10_c9555ec63106153aaaad753a281ff47f4ac79e980ff7f5d740d6649cd56a_upymenu-0.0.1.tar.gz b/swh/loader/package/pypi/tests/data/https_files.pythonhosted.org/packages_86_10_c9555ec63106153aaaad753a281ff47f4ac79e980ff7f5d740d6649cd56a_upymenu-0.0.1.tar.gz
new file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/swh/loader/package/pypi/tests/data/https_pypi.org/pypi_upymenu_json b/swh/loader/package/pypi/tests/data/https_pypi.org/pypi_upymenu_json
new file mode 100644
--- /dev/null
+++ b/swh/loader/package/pypi/tests/data/https_pypi.org/pypi_upymenu_json
@@ -0,0 +1,113 @@
+{
+  "info": {
+    "author": "Joost Plattel",
+    "author_email": "",
+    "bugtrack_url": null,
+    "classifiers": [],
+    "description": "# uPyMenu\n\nuPyMenu is a micropython menu implementation for LCD displays. Coming from an Arduino experience, I was used with [LiquidCrystal](https://github.com/arduino-libraries/LiquidCrystal) and [LiquidMenu](https://github.com/VaSe7u/LiquidMenu), but they don't offer a python implementation. So I figured I could create one myself.\n\n# Development\n\nCurrent development is done based on when I have to to work on it when I want to. But feel free to fork it and add your functionality. If you find any bugs or have suggestions for features, please open up a issue (or pull-request if you create the feature yourself!).\n\n## TODO\n\n*   Add arguments to callback actions in the menu\n\n# Usage\n\nThe example below renders a menu with a submenu and actions that have callbacks attached which you can use to run your own function. It requires one dependency, and that's [`python_lcd`](https://github.com/dhylands/python_lcd) for interacting with the LCD itself.\n\n```python\nfrom machine import Pin, I2C # Basics for creating an LCD interface\nfrom esp8266_i2c_lcd import I2cLcd # Example LCD interface used\nfrom upymenu import Menu, MenuAction, MenuNoop\n\ndef action_callback():\n    print(\"callback action chosen\")\n\nsubmenu = Menu(\"Submenu\")\nsubmenu_action_1 = MenuAction(\"Submenu Action\", callback=action_callback)\nsubmenu_action_2 = MenuAction(\"Submenu Action 1\", callback=action_callback)\nsubmenu.add_option(submenu_action_1)\nsubmenu.add_option(submenu_action_2)\n\nmenu_action = MenuAction(\"Action\", callback=action_callback)\nmenu = Menu(\"Main Menu\")\nmenu.add_option(submenu)\nmenu.add_option(menu_action)\nmenu.add_option(MenuNoop(\"Nothing here\"))\n\n# Example config for LCD via i2c, you will need this \n# for the menu to function, the screen size is required\n# to render the menu correctly on the screen.\ni2c = I2C(scl=Pin(5), sda=Pin(4), freq=400000)\nlcd = I2cLcd(i2c, 0x3F, 4, 20)\n\ncurrent_menu = menu.start(lcd) # Starts the menu on the LCD\n\nmenu.focus_next() # Focus on the next item in the menu \nmenu.focus_prev() # Focus on the previous item in the menu \n\n# Choose the focused item, if it's and action execute \n# the callback, or if it is a menu, render that menu.\nmenu = menu.choose()\n\n# If it's a submenu, you can use the parent() function\n# to navigate back up to the tree.\nmenu = menu.parent() \n```\n\n# Testing\n\nIf you have a `micropython` port running locally, you can run the test suite with it, ie: `micropython tests.py`. This is as close I can get with my current knowledge about micropython. Any pointers and suggestions towards improvement here would be appreciated!\n\n",
+    "description_content_type": "text/markdown",
+    "docs_url": null,
+    "download_url": "",
+    "downloads": {
+      "last_day": -1,
+      "last_month": -1,
+      "last_week": -1
+    },
+    "home_page": "https://github.com/jplattel/upymenu",
+    "keywords": "",
+    "license": "",
+    "maintainer": "",
+    "maintainer_email": "",
+    "name": "upymenu",
+    "package_url": "https://pypi.org/project/upymenu/",
+    "platform": "",
+    "project_url": "https://pypi.org/project/upymenu/",
+    "project_urls": {
+      "Homepage": "https://github.com/jplattel/upymenu"
+    },
+    "release_url": "https://pypi.org/project/upymenu/0.0.1/",
+    "requires_dist": null,
+    "requires_python": "",
+    "summary": "A micropython Menu for LCD Displays",
+    "version": "0.0.1"
+  },
+  "last_serial": 6514377,
+  "releases": {
+    "0.0.1": [
+      {
+        "comment_text": "",
+        "digests": {
+          "md5": "9a71147f342cf1a2f224bc39bab467de",
+          "sha256": "45159f7c599400fdb8ba69e898472481b2f4e72eb417c90bf425b1cea7bd0442"
+        },
+        "downloads": -1,
+        "filename": "upymenu-0.0.1-py3-none-any.whl",
+        "has_sig": false,
+        "md5_digest": "9a71147f342cf1a2f224bc39bab467de",
+        "packagetype": "bdist_wheel",
+        "python_version": "py3",
+        "requires_python": null,
+        "size": 4515,
+        "upload_time": "2020-01-24T15:47:22",
+        "upload_time_iso_8601": "2020-01-24T15:47:22.810597Z",
+        "url": "https://files.pythonhosted.org/packages/2a/1a/3dd2d22a22150a74c2d664163cd3739c91612838377128cc2d3da43285f7/upymenu-0.0.1-py3-none-any.whl"
+      },
+      {
+        "comment_text": "",
+        "digests": {
+          "md5": "dc87480218b64094e9b8a4191bd6d9ef",
+          "sha256": "05c86d8690d8fd8f331ddca03544608a1e7993226d5d14ce5a7bbb96d215cc18"
+        },
+        "downloads": -1,
+        "filename": "upymenu-0.0.1.tar.gz",
+        "has_sig": false,
+        "md5_digest": "dc87480218b64094e9b8a4191bd6d9ef",
+        "packagetype": "sdist",
+        "python_version": "source",
+        "requires_python": null,
+        "size": 2848,
+        "upload_time": "2020-01-24T15:47:25",
+        "upload_time_iso_8601": "2020-01-24T15:47:25.223650Z",
+        "url": "https://files.pythonhosted.org/packages/86/10/c9555ec63106153aaaad753a281ff47f4ac79e980ff7f5d740d6649cd56a/upymenu-0.0.1.tar.gz"
+      }
+    ]
+  },
+  "urls": [
+    {
+      "comment_text": "",
+      "digests": {
+        "md5": "9a71147f342cf1a2f224bc39bab467de",
+        "sha256": "45159f7c599400fdb8ba69e898472481b2f4e72eb417c90bf425b1cea7bd0442"
+      },
+      "downloads": -1,
+      "filename": "upymenu-0.0.1-py3-none-any.whl",
+      "has_sig": false,
+      "md5_digest": "9a71147f342cf1a2f224bc39bab467de",
+      "packagetype": "bdist_wheel",
+      "python_version": "py3",
+      "requires_python": null,
+      "size": 4515,
+      "upload_time": "2020-01-24T15:47:22",
+      "upload_time_iso_8601": "2020-01-24T15:47:22.810597Z",
+      "url": "https://files.pythonhosted.org/packages/2a/1a/3dd2d22a22150a74c2d664163cd3739c91612838377128cc2d3da43285f7/upymenu-0.0.1-py3-none-any.whl"
+    },
+    {
+      "comment_text": "",
+      "digests": {
+        "md5": "dc87480218b64094e9b8a4191bd6d9ef",
+        "sha256": "05c86d8690d8fd8f331ddca03544608a1e7993226d5d14ce5a7bbb96d215cc18"
+      },
+      "downloads": -1,
+      "filename": "upymenu-0.0.1.tar.gz",
+      "has_sig": false,
+      "md5_digest": "dc87480218b64094e9b8a4191bd6d9ef",
+      "packagetype": "sdist",
+      "python_version": "source",
+      "requires_python": null,
+      "size": 2848,
+      "upload_time": "2020-01-24T15:47:25",
+      "upload_time_iso_8601": "2020-01-24T15:47:25.223650Z",
+      "url": "https://files.pythonhosted.org/packages/86/10/c9555ec63106153aaaad753a281ff47f4ac79e980ff7f5d740d6649cd56a/upymenu-0.0.1.tar.gz"
+    }
+  ]
+}
diff --git a/swh/loader/package/pypi/tests/test_pypi.py b/swh/loader/package/pypi/tests/test_pypi.py
--- a/swh/loader/package/pypi/tests/test_pypi.py
+++ b/swh/loader/package/pypi/tests/test_pypi.py
@@ -801,3 +801,30 @@
             'something': 'wrong',
         }
         assert artifact_to_revision_id({}, artifact_metadata)
+
+
+def test_pypi_artifact_with_no_intrinsic_metadata(
+        swh_config, requests_mock_datadir):
+    """Skip artifact with no intrinsic metadata during ingestion
+
+    """
+    url = 'https://pypi.org/project/upymenu'
+    loader = PyPILoader(url)
+
+    actual_load_status = loader.load()
+    expected_snapshot_id = '1a8893e6a86f444e8be8e7bda6cb34fb1735a00e'
+    assert actual_load_status == {
+        'status': 'eventful',
+        'snapshot_id': expected_snapshot_id,
+    }
+
+    # no branch as one artifact without any intrinsic metadata
+    expected_snapshot = {
+        'id': expected_snapshot_id,
+        'branches': {}
+    }
+    check_snapshot(expected_snapshot, loader.storage)
+
+    origin_visit = next(loader.storage.origin_visit_get(url))
+    assert origin_visit['status'] == 'full'
+    assert origin_visit['type'] == 'pypi'