Merge branch 'master' into plugin-stability

certbot-ci/snap_integration_tests/dns_tests/test_main.py

@@ -38,5 +38,8 @@ def test_dns_plugin_install(dns_snap_path):
 
         assert plugin_name in subprocess.check_output(['certbot', 'plugins', '--prepare'],
                                                       universal_newlines=True)
+        subprocess.check_call(['snap', 'connect', 'certbot:certbot-metadata',
+            snap_name + ':certbot-metadata'])
+        subprocess.check_call(['snap', 'install', '--dangerous', dns_snap_path])
     finally:
         subprocess.call(['snap', 'remove', 'plugin_name'])

certbot-dns-cloudflare/setup.py

@@ -17,14 +17,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.29.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-cloudflare/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-cloudflare/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-cloudflare
 summary: Cloudflare DNS Authenticator plugin for Certbot
 description: Cloudflare DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-cloudxns/setup.py

@@ -17,14 +17,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.31.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-cloudxns/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-cloudxns/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-cloudxns
 summary: CloudXNS DNS Authenticator plugin for Certbot
 description: CloudXNS DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-digitalocean/setup.py

@@ -18,14 +18,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.29.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-digitalocean/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-digitalocean/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-digitalocean
 summary: DigitalOcean DNS Authenticator plugin for Certbot
 description: DigitalOcean DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-dnsimple/setup.py

@@ -16,14 +16,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.31.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-dnsimple/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-dnsimple/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-dnsimple
 summary: DNSimple DNS Authenticator plugin for Certbot
 description: DNSimple DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-dnsmadeeasy/setup.py

@@ -17,14 +17,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.31.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-dnsmadeeasy/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-dnsmadeeasy/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-dnsmadeeasy
 summary: DNS Made Easy DNS Authenticator plugin for Certbot
 description: DNS Made Easy DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-gehirn/setup.py

@@ -16,14 +16,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.31.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-gehirn/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-gehirn/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-gehirn
 summary: Gehirn Infrastructure Service DNS Authenticator plugin for Certbot
 description: Gehirn Infrastructure Service DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-google/setup.py

@@ -20,14 +20,16 @@ install_requires = [
     'httplib2'
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.29.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-google/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-google/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-google
 summary: Google Cloud DNS Authenticator plugin for Certbot
 description: Google Cloud DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-linode/setup.py

@@ -16,14 +16,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.31.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-linode/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-linode/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-linode
 summary: Linode DNS Authenticator plugin for Certbot
 description: Linode DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-luadns/setup.py

@@ -17,14 +17,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.31.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-luadns/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-luadns/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-luadns
 summary: LuaDNS Authenticator plugin for Certbot
 description: LuaDNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-nsone/setup.py

@@ -17,14 +17,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.31.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-nsone/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-nsone/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-nsone
 summary: NS1 DNS Authenticator plugin for Certbot
 description: NS1 DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-ovh/setup.py

@@ -17,14 +17,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.31.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-ovh/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-ovh/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-ovh
 summary: OVH DNS Authenticator plugin for Certbot
 description: OVH DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-rfc2136/setup.py

@@ -17,14 +17,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.29.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-rfc2136/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-rfc2136/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-rfc2136
 summary: RFC 2136 DNS Authenticator plugin for Certbot
 description: RFC 2136 DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-route53/setup.py

@@ -17,14 +17,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.29.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-route53/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-route53/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-route53
 summary: Route53 DNS Authenticator plugin for Certbot
 description: Route53 DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

certbot-dns-sakuracloud/setup.py

@@ -16,14 +16,16 @@ install_requires = [
     'zope.interface',
 ]
 
-if not os.environ.get('EXCLUDE_CERTBOT_DEPS'):
+if not os.environ.get('SNAP_BUILD'):
     install_requires.extend([
         'acme>=0.31.0',
         'certbot>=1.1.0',
     ])
 elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset EXCLUDE_CERTBOT_DEPS when building wheels '
+    raise RuntimeError('Unset SNAP_BUILD when building wheels '
                        'to include certbot dependencies.')
+if os.environ.get('SNAP_BUILD'):
+    install_requires.append('packaging')
 
 setuptools_known_environment_markers = (LooseVersion(setuptools_version) >= LooseVersion('36.2'))
 if setuptools_known_environment_markers:

certbot-dns-sakuracloud/snap/hooks/post-refresh

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=$(cat $SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=$(grep -oP "version = '\K.*(?=')" $SNAP/setup.py)
+
+
+/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if  version.parse('$cb_installed') < version.parse('$cb_required') else sys.exit(0)" || exit_code=$?
+if [ "$exit_code" -eq 1 ]; then
+  echo "Certbot is version $cb_installed but needs to be at least $cb_required before"     "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi

certbot-dns-sakuracloud/snap/snapcraft.yaml

@@ -1,3 +1,4 @@
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: certbot-dns-sakuracloud
 summary: Sakura Cloud DNS Authenticator plugin for Certbot
 description: Sakura Cloud DNS Authenticator plugin for Certbot
@@ -15,7 +16,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -23,3 +31,9 @@ slots:
     content: certbot-1
     read:
       - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared

snap/snapcraft.yaml

@@ -79,14 +79,27 @@ parts:
         cd $SNAPCRAFT_PART_SRC
         python3 tools/strip_hashes.py letsencrypt-auto-source/pieces/dependency-requirements.txt | grep -v python-augeas > snap-constraints.txt
         snapcraftctl set-version `git describe|sed s/^v//`
-
   wrappers:
     plugin: dump
     source: .
     stage: [certbot.wrapper]
+  shared-metadata:
+    plugin: dump
+    source: .
+    override-pull: |
+      snapcraftctl pull
+      mkdir -p certbot-metadata
+      grep -oP "__version__ = '\K.*(?=')" $SNAPCRAFT_PART_SRC/certbot/certbot/__init__.py > certbot-metadata/certbot-version.txt
+    stage: [certbot-metadata/certbot-version.txt]
 
 plugs:
   plugin:
     interface: content
     content: certbot-1
     target: $SNAP/certbot-plugin
+
+slots:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    read: [$SNAP/certbot-metadata]

tools/generate_dnsplugins_postrefreshhook.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+# Generate the hooks/post-refresh file for all DNS plugins
+set -e
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+CERTBOT_DIR="$(dirname "${DIR}")"
+
+for PLUGIN_PATH in "${CERTBOT_DIR}"/certbot-dns-*; do
+  PLUGIN=$(basename "${PLUGIN_PATH}")
+  mkdir -p "${PLUGIN_PATH}/snap/hooks"
+  cat <<EOF > "${PLUGIN_PATH}/snap/hooks/post-refresh"
+#!/bin/sh -e
+# This file is generated by tools/generate_dnsplugins_postrefreshhook.sh and should not be edited manually.
+
+# get certbot version
+if [ ! -f "\$SNAP/certbot-shared/certbot-version.txt" ]; then
+  echo "No certbot version available; not doing version comparison check" >> "\$SNAP_DATA/debuglog"
+  exit 0
+fi
+cb_installed=\$(cat \$SNAP/certbot-shared/certbot-version.txt)
+
+# get required certbot version for plugin. certbot version must be at least the plugin's
+# version. note that this is not the required version in setup.py, but the version number itself.
+cb_required=\$(grep -oP "version = '\K.*(?=')" \$SNAP/setup.py)
+
+
+$SNAP/bin/python3 -c "import sys; from setuptools._vendor.packaging import version; sys.exit(1) if\
+  version.parse('\$cb_installed') < version.parse('\$cb_required') else sys.exit(0)" || exit_code=\$?
+if [ "\$exit_code" -eq 1 ]; then
+  echo "Certbot is version \$cb_installed but needs to be at least \$cb_required before" \
+    "this plugin can be updated; will try again on next refresh."
+  exit 1
+fi
+EOF
+done

tools/generate_dnsplugins_snapcraft.sh

@@ -10,6 +10,7 @@ for PLUGIN_PATH in "${CERTBOT_DIR}"/certbot-dns-*; do
   DESCRIPTION=$(grep description "${PLUGIN_PATH}/setup.py" | sed -E 's|\s+description="(.*)",|\1|g')
   mkdir -p "${PLUGIN_PATH}/snap"
   cat <<EOF > "${PLUGIN_PATH}/snap/snapcraft.yaml"
+# This file is generated by tools/generate_dnsplugins_snapcraft.sh and should not be edited manually.
 name: ${PLUGIN}
 summary: ${DESCRIPTION}
 description: ${DESCRIPTION}
@@ -27,7 +28,14 @@ parts:
         snapcraftctl pull
         snapcraftctl set-version \`grep ^version \$SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"\`
     build-environment:
-      - EXCLUDE_CERTBOT_DEPS: "True"
+      - SNAP_BUILD: "True"
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p \$SNAPCRAFT_PART_SRC/certbot-shared
 
 slots:
   certbot:
@@ -35,5 +43,11 @@ slots:
     content: certbot-1
     read:
       - \$SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: \$SNAP/certbot-shared
 EOF
 done