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+---
+title: "AWS EB PyYAML fix"
+permalink: /aws-eb-pyyaml-fix.html
+date: 2023-09-18T07:27:29+02:00
+layout: post
+type: note
+draft: false
+---
+
+Recent update of my system completely borked [EB CLI](https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/eb-cli3-install-advanced.html)
+on my machine.
+
+I tried installing it with `pip install awsebcli --upgrade --user` and it failed.
+
+The error was the following.
+
+```text
+Collecting PyYAML<6.1,>=5.3.1 (from awsebcli)
+  Using cached PyYAML-5.4.1.tar.gz (175 kB)
+  Installing build dependencies ... done
+  Getting requirements to build wheel ... error
+  error: subprocess-exited-with-error
+  
+  × Getting requirements to build wheel did not run successfully.
+  │ exit code: 1
+  ╰─> [68 lines of output]
+```
+
+To fix this issue with PyYAML you must install PyYAML separately.
+
+Do the following and try installing `eb` again after.
+
+```sh
+echo 'Cython < 3.0' > /tmp/constraint.txt
+PIP_CONSTRAINT=/tmp/constraint.txt pip install 'PyYAML==5.4.1'
+```