get rid of plugin mechanism (#40)

.github/workflows/release.yml

@@ -79,6 +79,14 @@ jobs:
         python: ['3.6', '3.7']
 
     steps:
+    - uses: actions/checkout@v2
+
+    - name: Cleanup directory
+      run: |
+        # Remove the source code so that it doesn't conflict with the wheel
+        # installation.
+        rm -rf allennlp_models/
+
     - name: Setup Python
       uses: actions/setup-python@v1
       with:
@@ -98,9 +106,13 @@ jobs:
       run: |
         pip install $(ls dist/*.whl)
 
-    - name: Ensure models plugin found
+    - name: Ensure models automatically loaded
+      run: |
+        ./scripts/ensure_models_found.py
+
+    - name: Ensure versions match
       run: |
-        python -c 'from allennlp.common.plugins import discover_plugins; assert "allennlp_plugins.allennlp_models" in list(discover_plugins())'
+        ./scripts/ensure_versions_match.py
 
   publish:
     name: PyPI

scripts/ensure_models_found.py

@@ -0,0 +1,12 @@
+#!/usr/bin/env python
+
+"""
+Ensures models are automatically found by allennlp.
+"""
+
+from allennlp.common.plugins import import_plugins
+from allennlp.models import Model
+
+
+import_plugins()
+Model.by_name("copynet_seq2seq")

scripts/ensure_versions_match.py

@@ -0,0 +1,11 @@
+#!/usr/bin/env python
+
+"""
+Ensures allennlp and models versions are the same.
+"""
+
+from allennlp.version import VERSION as CORE_VERSION
+from allennlp_models.version import VERSION as MODELS_VERSION
+
+
+assert CORE_VERSION == MODELS_VERSION, f"core: {CORE_VERSION}, models: {MODELS_VERSION}"