Prepare conda build artifacts step fails on Azure + Windows with "The syntax of the command is incorrect."

[ryanvolz]

Solution to issue cannot be found in the documentation.

• I checked the documentation.

Issue

Since #1701, and version 3.23.0, enabling storage of the conda build artifacts causes a failure on Azure + Windows during the "Prepare conda build artifacts" step, producing the error message "The syntax of the command is incorrect." See example.

The syntax error comes from the fact that %GITHUB_OUTPUT% is not defined on Azure (it is for GitHub Actions), and despite the fact that that variable is only used behind an if statement that checks for GHA CI, the script fails to parse since the variable expands to the empty string.

Switching to delayed expansion by accessing that variable as !GITHUB_OUTPUT! eliminates the syntax error. PR incoming.

Installed packages

N/A

Environment info

N/A