diff --git a/bioconda_utils/cli.py b/bioconda_utils/cli.py
index 917d463fc9..b572df25ba 100644
--- a/bioconda_utils/cli.py
+++ b/bioconda_utils/cli.py
@@ -353,7 +353,10 @@ def do_lint(recipe_folder, config, packages="*", cache=None, list_checks=False,
     messages = linter.get_messages()
 
     if messages:
-        print("The following problems have been found:\n")
+        print(
+            "The following problems have been found (visit https://bioconda.github.io/contributor/linting.html "
+            "for details on the particular lints you get below.):\n"
+        )
         print(linter.get_report())
 
     if not result:
diff --git a/bioconda_utils/lint/__init__.py b/bioconda_utils/lint/__init__.py
index c16b755575..82be133ea3 100644
--- a/bioconda_utils/lint/__init__.py
+++ b/bioconda_utils/lint/__init__.py
@@ -487,7 +487,7 @@ def __init__(self, config: Dict, recipe_folder: str,
         try:
             self.checks_ordered = reversed(list(nx.topological_sort(dag)))
         except nx.NetworkXUnfeasible:
-            raise RunTimeError("Cycle in LintCheck requirements!")
+            raise RuntimeError("Cycle in LintCheck requirements!")
         self.reload_checks()
 
     def reload_checks(self):
diff --git a/bioconda_utils/lint/check_build_help.py b/bioconda_utils/lint/check_build_help.py
index eae342ea85..a646fd1f36 100644
--- a/bioconda_utils/lint/check_build_help.py
+++ b/bioconda_utils/lint/check_build_help.py
@@ -136,3 +136,55 @@ class cython_needs_compiler(LintCheck):
     def check_deps(self, deps):
         if 'cython' in deps and 'compiler_c' not in deps:
             self.message()
+
+
+class missing_run_exports(LintCheck):
+    """Recipe should have a run_export statement that ensures correct pinning in downstream packages
+
+    This ensures that the package is automatically pinned to a compatible version if
+    it is used as a dependency in another recipe.
+    This is a conservative strategy to avoid breakage. We came to the 
+    conclusion that it is better to require this little overhead instead
+    of trying to fix things when they break later on.
+    This holds for compiled packages (in particular those with shared
+    libraries) but also for e.g. Python packages, as those might also
+    introduce breaking changes in their APIs or command line interfaces.
+
+    We distinguish between three cases. If the software follows semantic versioning (or it has at least a normal version string (like 1.2.3) and the actual strategy of the devs is unknown), add run_exports to the recipe like this::
+
+      build:
+        run_exports:
+          - {{ pin_subpackage('myrecipe', max_pin="x") }}
+
+    with ``myrecipe`` being the name of the recipe (you can also use the name variable).
+    This will by default pin the package to ``>=1.2.0,<2.0.0`` where ``1.2.0`` is the 
+    version of the package at build time of the one depending on it and ``<2.0.0`` constrains
+    it to be less than the next major (i.e. potentially not backward compatible) version.
+    
+    If the software has a normal versioning (like 1.2.3) but does reportedly not follow semantic versioning, please choose the ``max_pin`` argument such that it captures the potential next version that will introduce a breaking change. E.g. if you expect breaking changes to occur with the next minor release, choose ``max_pin="x.x"``, if they even can occur with the next patch release, choose ``max_pin="x.x.x"``.
+    
+    If the software does have a non-standard versioning (e.g. calendar versioning like 20220602), we cannot really protect well against breakages. However, we can at least pin to the current version as a minimum and skip the max_pin constraint. This works by setting ``max_pin=None``.
+
+    In the recipe depending on this one, one just needs to specify the package name
+    and no version at all.
+    If you need a different pinning strategy for this particular recipe (e.g. because it does
+    not follow semantic versioning), you can e.g. use ``max_pin="x.x"`` to pin to the minor
+    version (i.e. translating to ``>=1.2.0,<1.3.0`` ).
+    
+    Also check out the possible arguments of `pin_subpackage` here:
+    https://docs.conda.io/projects/conda-build/en/stable/resources/define-metadata.html#export-runtime-requirements
+
+    Since this strategy can lead to potentially more conflicts in dependency pinnings between tools,
+    it is advisable to additionally set a common version of very frequently used packages for all
+    builds. This happens by specifying the version via a separate pull request in the project wide build
+    configuration file here:
+    https://github.com/bioconda/bioconda-utils/blob/master/bioconda_utils/bioconda_utils-conda_build_config.yaml
+
+    Finally, note that conda is unable to conduct such pinnings in case the dependency and the depending recipe
+    are updated within the same pull request. Hence, the pull request adding the run_export statement
+    has to be merged before the one updating or creating the depending recipe is created.
+    """
+    def check_recipe(self, recipe):
+        build = recipe.meta.get("build", dict())
+        if "run_exports" not in build:
+            self.message()
diff --git a/test/lint_cases.yaml b/test/lint_cases.yaml
index a1ec41df54..a9d882a509 100644
--- a/test/lint_cases.yaml
+++ b/test/lint_cases.yaml
@@ -12,6 +12,12 @@ setup:
         build:
           noarch: True
           number: 0
+          run_exports:
+            # add a run export
+            # (note that jinja templating as in reality is not
+            # supported by our test system to the same
+            # extend as in conda build)
+            - "{{ pin_subpackage('one') }}"
         test:
           commands:
             - do nothing
@@ -33,6 +39,12 @@ setup:
         build:
           noarch: True
           number: 0
+          run_exports:
+            # add a run export
+            # (note that jinja templating as in reality is not
+            # supported by our test system to the same
+            # extend as in conda build)
+            - "{{ pin_subpackage('two') }}"
         test:
           commands:
             - do nothing
@@ -54,336 +66,343 @@ setup:
       R:
         - version: 1.0
 
-
 tests:
-- name: minimal_recipe
-- name: missing_meta_yaml
-  move_files:
-    meta.yaml: ''
-  expect: missing_meta_yaml
-- name: meta_yml
-  move_files:
-    meta.yaml: meta.yml
-  expect: missing_meta_yaml
-- name: empty_build_section
-  remove: build
-  expect: [should_be_noarch_generic, missing_build_number]
-- name: missing_home
-  remove: about/home
-  expect: missing_home
-- name: missing_home_with_lint_skip
-  remove: about/home
-  add:
-    extra:
-      skip-lints:
-        - missing_home
-- name: passing_only_package
-  remove:
-    - source
-    - build
-    - test
-    - about
-  add:
-    extra:
-      skip-lints:
-        - missing_home
-        - missing_license
-        - missing_build_number
-        - missing_summary
-        - missing_tests
-        - no_tests
-        - gpl_requires_license_distributed
-        - should_be_noarch_generic
-- name: missing_home_empty_string
-  add: { about: { home: '' } }
-  expect: missing_home
-- name: missing_summary
-  remove: about/summary
-  expect: missing_summary
-- name: missing_summary_empty_string
-  add: { about: { summary: '' } }
-  expect: missing_summary
-- name: missing_license
-  remove: about/license
-  expect: missing_license
-- name: missing_license_empty_string
-  add: { about: { license: '' } }
-  expect: missing_license
-- name: missing_tests
-  remove: test
-  expect: missing_tests
-- name: missing_tests_empty_section
-  remove:
-    - test/commands
-  expect: missing_tests
-- name: missing_tests_but_runtest_py
-  remove: test
-  add_files:
-    run_test.py: ''
-- name: missing_tests_but_runtest_sh
-  remove: test
-  add_files:
-    run_test.sh: ''
-- name: missing_tests_but_runtest_pl
-  remove: test
-  add_files:
-    run_test.pl: ''
-- name: missing_tests_but_runtst_sh
-  remove: test
-  add_files:
-    run_tst.sh: ''
-  expect: missing_tests
-- name: missing_hash
-  remove: source/sha256
-  expect: missing_hash
-- name: md5_hash
-  remove: source/sha256
-  add: { source: { md5: abc } }
-- name: sha1_hash
-  remove: source/sha256
-  add: { source: { sha1: abc } }
-- name: no_source
-  remove: source
-- name: uses_git_url
-  expect: uses_vcs_url
-  remove: source/url
-  add: { source: { git_url: someurl } }
-- name: uses_svn_url
-  expect: uses_vcs_url
-  remove: source/url
-  add: { source: { svn_url: someurl } }
-- name: uses_hg_url
-  expect: uses_vcs_url
-  remove: source/url
-  add: { source: { hg_url: someurl } }
-- name: uses_perl_threaded_in_build
-  add: { requirements: { build: [perl-threaded] } }
-  expect: uses_perl_threaded
-- name: uses_perl_threaded_in_run
-  add: { requirements: { run: [perl-threaded] } }
-  expect: uses_perl_threaded
-- name: uses_perl_threaded_in_host
-  add: { requirements: { host: [perl-threaded] } }
-  expect: uses_perl_threaded
-- name: uses_perl_threaded_in_run_and_build
-  add: { requirements: { run: [perl-threaded], host: [perl-threaded] } }
-  expect: uses_perl_threaded
-- name: uses_openjdk_in_build
-  add: { requirements: { build: [openjdk] } }
-- name: uses_openjdk_in_build_and_run
-  add: { requirements: { run: [openjdk], build: [openjdk] } }
-- name: uses_javajdk_in_build
-  add: { requirements: { build: [java-jdk] } }
-  expect: uses_javajdk
-- name: uses_javajdk_in_run
-  add: { requirements: { run: [java-jdk] } }
-  expect: uses_javajdk
-- name: uses_openjdk_in_build_and_run
-  add: { requirements: { run: [java-jdk], build: [java-jdk] } }
-  expect: uses_javajdk
-- name: uses_matplotlib_in_run
-  add: { requirements: { run: [matplotlib] } }
-  expect: uses_matplotlib
-- name: uses_setuptools_in_build
-  add: { requirements: { build: [setuptools] } }
-- name: uses_setuptools_in_run
-  add: { requirements: { run: [setuptools] } }
-  expect: uses_setuptools
-- name: uses_setuptools_in_run_and_build
-  add: { requirements: { run: [setuptools], build: [setuptools] } }
-  expect: uses_setuptools
-- name: has_windows_bat_file
-  add_files:
-    build.bat: ''
-  expect: has_windows_bat_file
-- name: has_windows_bat_file
-  add_files:
-    any.bat: ''
-  expect: has_windows_bat_file
-# FIXME: should_be_noarch without python
-- name: should_be_noarch_python
-  add: { requirements: { build: [python], run: [python] } }
-  expect: should_be_noarch_python
-- name: should_be_noarch_python_good
-  add: { build: { noarch: python }, requirements: { build: [python], run: [python] } }
-- name: should_be_noarch_python_good_skip
-  add:
-    build: { noarch: python, skip: false }
-    requirements: { host: [python], run: [python] }
-- name: should_not_be_noarch_compiler
-  add:
-    build: { noarch: python }
-    requirements: { build: [compiler_gcc]}
-  expect: should_not_be_noarch_compiler
-- name: should_not_be_noarch_skip
-  add:
-    build:
-      noarch: python
-      skip: True  # [osx]
-  expect: should_not_be_noarch_skip
-- name: should_not_be_noarch_source
-  expect: should_not_be_noarch_source
-  remove: source
-  add:
-    source:
-      - url: https://somewhere  # [linux]
-        sha256: 123             # [linux]
-      - url: https://elsewhere  # [osx]
-        sha256: 123             # [osx]
-- name: selector_in_source_with_compiler
-  remove:
-    - source
-    - build/noarch
-  add:
-    source:
-      - url: https://somewhere  # [linux]
-        sha256: 123             # [linux]
-      - url: https://elsewhere  # [osx]
-        sha256: 123             # [osx]
-    requirements: { build: ['{{compiler("c")}}'] }
-- name: noarch_java_with_python_wrapper
-  add:
-    build: { noarch: generic }
-    requirements: { run: [openjdk, python] }
-- name: setup_py_only_install_build_sh
-  add_files:
-    build.sh: |
-      $PYTHON setup.py install
-- name: setup_py_only_install_script
-  add:
-    build:
-      script: $PYTHON setup.py install
-- name: setup_py_correct_build_sh
-  add: { requirements: { build: [setuptools] } }
-  add_files:
-    build.sh: |
-      $PYTHON setup install  --single-version-externally-managed --report=a.txt
-- name: setup_py_correct_build_sh_wrapped
-  add: { requirements: { build: [setuptools] } }
-  add_files:
-    build.sh: |
-      $PYTHON setup install \\
-      --single-version-externally-managed --report=a.txt
-- name: setup_py_correct_build_sh_no_setuptools
-  add_files:
-    build.sh: |
-      $PYTHON setup install  --single-version-externally-managed --report=a.txt
-- name: setup_py_correct_script
-  add: { requirements: { build: [setuptools] } }
-  add_files:
-    build.sh: |
-      $PYTHON setup install  --single-version-externally-managed --report=a.txt
-- name: setup_py_incorrect_script
-  expect: setup_py_install_args
-  add:
-    requirements: { build: [setuptools] }
-    build:
-      script: $PYTHON setup.py install
-- name: setup_py_incorrect_build_sh
-  expect: setup_py_install_args
-  add: { requirements: { build: [setuptools] } }
-  add_files:
-    build.sh: |
-      $PYTHON setup.py install
-- name: version_constraints_whitespace_ok
-  add: { requirements: { run: ['one >1', 'two >=1', 'three >1,<2'] } }
-- name: version_constraints_whitespace_missing
-  expect: version_constraints_missing_whitespace
-  add: { requirements: { run: ['one>1'] } }
-- name: extra_identifiers_ok
-  add: { extra: { identifiers: ['doi:123'] } }
-- name: extra_identifiers_not_list
-  expect: extra_identifiers_not_list
-  add: { extra: { identifiers: 'doi:123' } }
-- name: extra_identifiers_not_list
-  expect: extra_identifiers_not_list
-  add: { extra: { identifiers: { doi: 123 } } }
-- name: extra_identifiers_not_string
-  expect: extra_identifiers_not_string
-  add: { extra: { identifiers: [ { doi: 123} ] } }
-- name: extra_identifiers_missing_colon
-  expect: extra_identifiers_missing_colon
-  add: { extra: { identifiers: [ '123' ] } }
-- name: numpy_ok
-  add: { requirements: { build: [numpy], run: [numpy]} }
-- name: numpy_deprecated
-  expect: deprecated_numpy_spec
-  add: { requirements: { build: ['numpy x.x'], run: ['numpy x.x']} }
-- name: compiler_ok
-  remove: build/noarch
-  add: { requirements: { build: ['{{compiler("c")}}'] } }
-- name: compiler_old_1
-  expect: should_use_compilers
-  add: { requirements: { build: ['gcc  # [linux]'] } }
-- name: compiler_old_2
-  expect: should_use_compilers
-  add: { requirements: { build: ['libgcc  # [linux]'] } }
-- name: compiler_old_3
-  expect: should_use_compilers
-  add: { requirements: { build: ['llvm  # [osx]'] } }
-- name: compiler_in_host
-  expect: compilers_must_be_in_build
-  remove: build/noarch
-  add: { requirements: { host: ['{{compiler("c")}}'] } }
-- name: compiler_in_run
-  expect: compilers_must_be_in_build
-  remove: build/noarch
-  add: { requirements: { run: ['{{compiler("c")}}'] } }
-- name: use_fn
-  expect: should_not_use_fn
-  add: { source: { fn: abc } }
-- name: folder_and_package_name_mismatch
-  expect: folder_and_package_name_must_match
-  add: { package: { name: somethingelse } }
-- name: gpl_without_license_file
-  expect: gpl_requires_license_distributed
-  add: { about: { license: GPLv3 } }
-- name: build_number_needs_reset
-  expect: build_number_needs_reset
-  add: { build: { number: 1 } }
-- name: build_number_needs_bump
-  expect: build_number_needs_bump
-  add: { package: { version: 0.0.1 } }
-- name: version_starts_with_v
-  expect: version_starts_with_v
-  add: { package: { version: "v0.1" } }
-- name: in_other_channels
-  expect: in_other_channels
-  repodata: { conda-forge: { one: [{version: 0.1}], two: [version: 0.1] } }
-- name: long_summary
-  expect: long_summary
-  add:
-    about:
-      summary: |
-        123456789012345678901234567890123456789012345678901234567890
-        123456789012345678901234567890123456789012345678901234567890
-- name: blacklisted
-  expect: recipe_is_blacklisted
-  add_root_files:
-    blacklist: |
-      recipes/one
-      recipes/two
-  config:
-    blacklists:
-      - blacklist
-- name: cran_packages_to_conda_forge
-  expect: cran_packages_to_conda_forge
-  add: { requirements: { run: [R, three] } }
-- name: cran_packages_to_conda_forge_bioconda_dep
-  add: { requirements: { run: [R, four] } }
-- name: cython_in_run_no_compiler
-  expect: [cython_must_be_in_host, cython_needs_compiler]
-  add: { requirements: { run: [cython] } }
-- name: cython_in_run
-  expect: cython_must_be_in_host
-  add:
-    requirements: { run: [cython], build: ['{{compiler("c")}}'] }
-    build: { noarch: False }
-- name: cython_in_host_no_compiler
-  expect: cython_needs_compiler
-  add: { requirements: { host: [cython] } }
-- name: cython_in_host
-  add:
-    requirements: { host: [cython], build: ['{{compiler("c")}}'] }
-    build: { noarch: False }
-
+  - name: minimal_recipe
+  - name: missing_meta_yaml
+    move_files:
+      meta.yaml: ""
+    expect: missing_meta_yaml
+  - name: meta_yml
+    move_files:
+      meta.yaml: meta.yml
+    expect: missing_meta_yaml
+  - name: empty_build_section
+    remove: build
+    expect:
+      [should_be_noarch_generic, missing_build_number, missing_run_exports]
+  - name: missing_home
+    remove: about/home
+    expect: missing_home
+  - name: missing_home_with_lint_skip
+    remove: about/home
+    add:
+      extra:
+        skip-lints:
+          - missing_home
+  - name: passing_only_package
+    remove:
+      - source
+      - build
+      - test
+      - about
+    add:
+      extra:
+        skip-lints:
+          - missing_home
+          - missing_license
+          - missing_build_number
+          - missing_summary
+          - missing_run_exports
+          - missing_tests
+          - no_tests
+          - gpl_requires_license_distributed
+          - should_be_noarch_generic
+  - name: missing_home_empty_string
+    add: { about: { home: "" } }
+    expect: missing_home
+  - name: missing_summary
+    remove: about/summary
+    expect: missing_summary
+  - name: missing_summary_empty_string
+    add: { about: { summary: "" } }
+    expect: missing_summary
+  - name: missing_license
+    remove: about/license
+    expect: missing_license
+  - name: missing_license_empty_string
+    add: { about: { license: "" } }
+    expect: missing_license
+  - name: missing_tests
+    remove: test
+    expect: missing_tests
+  - name: missing_tests_empty_section
+    remove:
+      - test/commands
+    expect: missing_tests
+  - name: missing_tests_but_runtest_py
+    remove: test
+    add_files:
+      run_test.py: ""
+  - name: missing_tests_but_runtest_sh
+    remove: test
+    add_files:
+      run_test.sh: ""
+  - name: missing_tests_but_runtest_pl
+    remove: test
+    add_files:
+      run_test.pl: ""
+  - name: missing_tests_but_runtst_sh
+    remove: test
+    add_files:
+      run_tst.sh: ""
+    expect: missing_tests
+  - name: missing_hash
+    remove: source/sha256
+    expect: missing_hash
+  - name: md5_hash
+    remove: source/sha256
+    add: { source: { md5: abc } }
+  - name: sha1_hash
+    remove: source/sha256
+    add: { source: { sha1: abc } }
+  - name: no_source
+    remove: source
+  - name: uses_git_url
+    expect: uses_vcs_url
+    remove: source/url
+    add: { source: { git_url: someurl } }
+  - name: uses_svn_url
+    expect: uses_vcs_url
+    remove: source/url
+    add: { source: { svn_url: someurl } }
+  - name: uses_hg_url
+    expect: uses_vcs_url
+    remove: source/url
+    add: { source: { hg_url: someurl } }
+  - name: uses_perl_threaded_in_build
+    add: { requirements: { build: [perl-threaded] } }
+    expect: uses_perl_threaded
+  - name: uses_perl_threaded_in_run
+    add: { requirements: { run: [perl-threaded] } }
+    expect: uses_perl_threaded
+  - name: uses_perl_threaded_in_host
+    add: { requirements: { host: [perl-threaded] } }
+    expect: uses_perl_threaded
+  - name: uses_perl_threaded_in_run_and_build
+    add: { requirements: { run: [perl-threaded], host: [perl-threaded] } }
+    expect: uses_perl_threaded
+  - name: uses_openjdk_in_build
+    add: { requirements: { build: [openjdk] } }
+  - name: uses_openjdk_in_build_and_run
+    add: { requirements: { run: [openjdk], build: [openjdk] } }
+  - name: uses_javajdk_in_build
+    add: { requirements: { build: [java-jdk] } }
+    expect: uses_javajdk
+  - name: uses_javajdk_in_run
+    add: { requirements: { run: [java-jdk] } }
+    expect: uses_javajdk
+  - name: uses_openjdk_in_build_and_run
+    add: { requirements: { run: [java-jdk], build: [java-jdk] } }
+    expect: uses_javajdk
+  - name: uses_matplotlib_in_run
+    add: { requirements: { run: [matplotlib] } }
+    expect: uses_matplotlib
+  - name: uses_setuptools_in_build
+    add: { requirements: { build: [setuptools] } }
+  - name: uses_setuptools_in_run
+    add: { requirements: { run: [setuptools] } }
+    expect: uses_setuptools
+  - name: uses_setuptools_in_run_and_build
+    add: { requirements: { run: [setuptools], build: [setuptools] } }
+    expect: uses_setuptools
+  - name: has_windows_bat_file
+    add_files:
+      build.bat: ""
+    expect: has_windows_bat_file
+  - name: has_windows_bat_file
+    add_files:
+      any.bat: ""
+    expect: has_windows_bat_file
+  # FIXME: should_be_noarch without python
+  - name: should_be_noarch_python
+    add: { requirements: { build: [python], run: [python] } }
+    expect: should_be_noarch_python
+  - name: should_be_noarch_python_good
+    add:
+      {
+        build: { noarch: python },
+        requirements: { build: [python], run: [python] },
+      }
+  - name: should_be_noarch_python_good_skip
+    add:
+      build: { noarch: python, skip: false }
+      requirements: { host: [python], run: [python] }
+  - name: should_not_be_noarch_compiler
+    add:
+      build: { noarch: python }
+      requirements: { build: [compiler_gcc] }
+    expect: should_not_be_noarch_compiler
+  - name: should_not_be_noarch_skip
+    add:
+      build:
+        noarch: python
+        skip: True # [osx]
+    expect: should_not_be_noarch_skip
+  - name: should_not_be_noarch_source
+    expect: should_not_be_noarch_source
+    remove: source
+    add:
+      source:
+        - url: https://somewhere # [linux]
+          sha256: 123 # [linux]
+        - url: https://elsewhere # [osx]
+          sha256: 123 # [osx]
+  - name: selector_in_source_with_compiler
+    remove:
+      - source
+      - build/noarch
+    add:
+      source:
+        - url: https://somewhere # [linux]
+          sha256: 123 # [linux]
+        - url: https://elsewhere # [osx]
+          sha256: 123 # [osx]
+      requirements: { build: ['{{compiler("c")}}'] }
+  - name: noarch_java_with_python_wrapper
+    add:
+      build: { noarch: generic }
+      requirements: { run: [openjdk, python] }
+  - name: setup_py_only_install_build_sh
+    add_files:
+      build.sh: |
+        $PYTHON setup.py install
+  - name: setup_py_only_install_script
+    add:
+      build:
+        script: $PYTHON setup.py install
+  - name: setup_py_correct_build_sh
+    add: { requirements: { build: [setuptools] } }
+    add_files:
+      build.sh: |
+        $PYTHON setup install  --single-version-externally-managed --report=a.txt
+  - name: setup_py_correct_build_sh_wrapped
+    add: { requirements: { build: [setuptools] } }
+    add_files:
+      build.sh: |
+        $PYTHON setup install \\
+        --single-version-externally-managed --report=a.txt
+  - name: setup_py_correct_build_sh_no_setuptools
+    add_files:
+      build.sh: |
+        $PYTHON setup install  --single-version-externally-managed --report=a.txt
+  - name: setup_py_correct_script
+    add: { requirements: { build: [setuptools] } }
+    add_files:
+      build.sh: |
+        $PYTHON setup install  --single-version-externally-managed --report=a.txt
+  - name: setup_py_incorrect_script
+    expect: setup_py_install_args
+    add:
+      requirements: { build: [setuptools] }
+      build:
+        script: $PYTHON setup.py install
+  - name: setup_py_incorrect_build_sh
+    expect: setup_py_install_args
+    add: { requirements: { build: [setuptools] } }
+    add_files:
+      build.sh: |
+        $PYTHON setup.py install
+  - name: version_constraints_whitespace_ok
+    add: { requirements: { run: ["one >1", "two >=1", "three >1,<2"] } }
+  - name: version_constraints_whitespace_missing
+    expect: version_constraints_missing_whitespace
+    add: { requirements: { run: ["one>1"] } }
+  - name: extra_identifiers_ok
+    add: { extra: { identifiers: ["doi:123"] } }
+  - name: extra_identifiers_not_list
+    expect: extra_identifiers_not_list
+    add: { extra: { identifiers: "doi:123" } }
+  - name: extra_identifiers_not_list
+    expect: extra_identifiers_not_list
+    add: { extra: { identifiers: { doi: 123 } } }
+  - name: extra_identifiers_not_string
+    expect: extra_identifiers_not_string
+    add: { extra: { identifiers: [{ doi: 123 }] } }
+  - name: extra_identifiers_missing_colon
+    expect: extra_identifiers_missing_colon
+    add: { extra: { identifiers: ["123"] } }
+  - name: numpy_ok
+    add: { requirements: { build: [numpy], run: [numpy] } }
+  - name: numpy_deprecated
+    expect: deprecated_numpy_spec
+    add: { requirements: { build: ["numpy x.x"], run: ["numpy x.x"] } }
+  - name: compiler_ok
+    remove: build/noarch
+    add: { requirements: { build: ['{{compiler("c")}}'] } }
+  - name: compiler_old_1
+    expect: should_use_compilers
+    add: { requirements: { build: ["gcc  # [linux]"] } }
+  - name: compiler_old_2
+    expect: should_use_compilers
+    add: { requirements: { build: ["libgcc  # [linux]"] } }
+  - name: compiler_old_3
+    expect: should_use_compilers
+    add: { requirements: { build: ["llvm  # [osx]"] } }
+  - name: compiler_in_host
+    expect: compilers_must_be_in_build
+    remove: build/noarch
+    add: { requirements: { host: ['{{compiler("c")}}'] } }
+  - name: compiler_in_run
+    expect: compilers_must_be_in_build
+    remove: build/noarch
+    add: { requirements: { run: ['{{compiler("c")}}'] } }
+  - name: use_fn
+    expect: should_not_use_fn
+    add: { source: { fn: abc } }
+  - name: folder_and_package_name_mismatch
+    expect: folder_and_package_name_must_match
+    add: { package: { name: somethingelse } }
+  - name: gpl_without_license_file
+    expect: gpl_requires_license_distributed
+    add: { about: { license: GPLv3 } }
+  - name: build_number_needs_reset
+    expect: build_number_needs_reset
+    add: { build: { number: 1 } }
+  - name: build_number_needs_bump
+    expect: build_number_needs_bump
+    add: { package: { version: 0.0.1 } }
+  - name: version_starts_with_v
+    expect: version_starts_with_v
+    add: { package: { version: "v0.1" } }
+  - name: in_other_channels
+    expect: in_other_channels
+    repodata: { conda-forge: { one: [{ version: 0.1 }], two: [version: 0.1] } }
+  - name: long_summary
+    expect: long_summary
+    add:
+      about:
+        summary: |
+          123456789012345678901234567890123456789012345678901234567890
+          123456789012345678901234567890123456789012345678901234567890
+  - name: blacklisted
+    expect: recipe_is_blacklisted
+    add_root_files:
+      blacklist: |
+        recipes/one
+        recipes/two
+    config:
+      blacklists:
+        - blacklist
+  - name: cran_packages_to_conda_forge
+    expect: cran_packages_to_conda_forge
+    add: { requirements: { run: [R, three] } }
+  - name: cran_packages_to_conda_forge_bioconda_dep
+    add: { requirements: { run: [R, four] } }
+  - name: cython_in_run_no_compiler
+    expect: [cython_must_be_in_host, cython_needs_compiler]
+    add: { requirements: { run: [cython] } }
+  - name: cython_in_run
+    expect: cython_must_be_in_host
+    add:
+      requirements: { run: [cython], build: ['{{compiler("c")}}'] }
+      build: { noarch: False }
+  - name: cython_in_host_no_compiler
+    expect: cython_needs_compiler
+    add: { requirements: { host: [cython] } }
+  - name: cython_in_host
+    add:
+      requirements: { host: [cython], build: ['{{compiler("c")}}'] }
+      build: { noarch: False }
+  - name: missing_run_exports
+    remove: build/run_exports
+    expect: missing_run_exports