improved brew formula generation

.gitignore

@@ -16,3 +16,4 @@ venv
 .eggs
 socli/data.json
 socli.rb
+wait-till-publish.py

.travis.yml

@@ -35,7 +35,6 @@ jobs:
         distributions: sdist bdist_wheel
     - stage: Deploy to Brew Tap
       if: tag IS present
+      install: skip
       python: 3.7
-      install:
-        - pip install socli # installs the latest version published
-      script: bash publish-brew-formula.sh
+      script: bash publish-brew-formula.sh # installs the latest published version and generates formula

publish-brew-formula.sh

@@ -1,5 +1,52 @@
 # Generate formula
-pip install homebrew-pypi-poet==0.10.0
+pip install homebrew-pypi-poet==0.10.0 requests==2.24.0
+
+# Code to wait till the latest package is available in pypi
+cat << EOF > wait-till-publish.py
+import requests
+import json
+import os
+import time
+
+try:
+    from packaging.version import parse
+except ImportError:
+    from pip._vendor.packaging.version import parse
+
+URL_PATTERN = 'https://pypi.python.org/pypi/{package}/json'
+
+
+def get_version(package, url_pattern=URL_PATTERN):
+    """Return version of package on pypi.python.org using json."""
+    req = requests.get(url_pattern.format(package=package))
+    version = parse('0')
+    if req.status_code == requests.codes.ok:
+        j = json.loads(req.text.encode('utf-8'))
+        releases = j.get('releases', [])
+        for release in releases:
+            ver = parse(release)
+            if not ver.is_prerelease:
+                version = max(version, ver)
+    return version
+
+
+if __name__ == '__main__':
+    tag = os.getenv('TRAVIS_TAG')
+    flag = True
+    while flag:
+        version = get_version('socli')
+        if version.base_version == tag:
+            print('Got latest version from pypi, version:' + version.base_version)
+            flag = False
+        else:
+            print('Cant get version ' + tag + ' from pypi, got: ' + version.base_version + ', Retrying in 5 secs...')
+            time.sleep(5)
+EOF
+python wait-till-publish.py
+
+# When latest version of socli is available in pypi do install
+pip install socli
+# Generate formula
 poet -f socli > socli.rb
 patch socli.rb formula-changes.patch
 echo "Generated formula:"