Revert "Speed up test execution"

This reverts commit 1ea9c69.

opentelemetry-api/pyproject.toml

@@ -1,10 +1,12 @@
 [build-system]
-requires = []
+requires = ["hatchling"]
+build-backend = "hatchling.build"
 
 [project]
 name = "opentelemetry-api"
 description = "OpenTelemetry Python API"
 readme = "README.rst"
+license = "Apache-2.0"
 requires-python = ">=3.7"
 authors = [
     { name = "OpenTelemetry Authors", email = "cncf-opentelemetry-contributors@lists.cncf.io" },

opentelemetry-sdk/pyproject.toml

@@ -1,11 +1,13 @@
 [build-system]
-requires = []
+requires = ["hatchling"]
+build-backend = "hatchling.build"
 
 [project]
 name = "opentelemetry-sdk"
 dynamic = ["version"]
 description = "OpenTelemetry Python SDK"
 readme = "README.rst"
+license = "Apache-2.0"
 requires-python = ">=3.7"
 authors = [
   { name = "OpenTelemetry Authors", email = "cncf-opentelemetry-contributors@lists.cncf.io" },

opentelemetry-semantic-conventions/pyproject.toml

@@ -1,11 +1,13 @@
 [build-system]
-requires = []
+requires = ["hatchling"]
+build-backend = "hatchling.build"
 
 [project]
 name = "opentelemetry-semantic-conventions"
 dynamic = ["version"]
 description = "OpenTelemetry Semantic Conventions"
 readme = "README.rst"
+license = "Apache-2.0"
 requires-python = ">=3.7"
 authors = [
   { name = "OpenTelemetry Authors", email = "cncf-opentelemetry-contributors@lists.cncf.io" },

tox.ini

@@ -125,9 +125,10 @@ changedir =
 
 commands_pre =
 ; Install without -e to test the actual installation
+  py3{7,8,9,10,11}: python -m pip install -U pip setuptools wheel
 ; Install common packages for all the tests. These are not needed in all the
 ; cases but it saves a lot of boilerplate in this file.
-  opentelemetry: pip install --no-deps --no-build-isolation -e {toxinidir}/opentelemetry-sdk
+  opentelemetry: pip install {toxinidir}/opentelemetry-api {toxinidir}/opentelemetry-semantic-conventions {toxinidir}/opentelemetry-sdk {toxinidir}/tests/opentelemetry-test-utils
 
   protobuf: pip install {toxinidir}/opentelemetry-proto