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Goal Produce identical HTML output when building a Sphinx project locally and on Read the Docs, despite the platform pinning a specific Sphinx version in its build image. Constraints and uncertainty Read the Docs builds run in a controlled Docker image that includes a fixed Sphinx release (for example, 7.2.x in the current "ubuntu-22.04" image). Local enviro
ImportError in RTD Build Environment The ReadTheDocs build logs report ImportError: No module named 'mypackage' when the Sphinx autodoc extension attempts to import the target module. Local builds succeed because the package is installed globally or the source directory is present on the local sys.path . Environment Constraints ReadTheDocs utilizes a clean v
Documentation Versioning and Build Failures Read the Docs employs a build-server architecture that triggers documentation generation via VCS webhooks. When a build is initiated, the system attempts to transform source files into static HTML using tools like Sphinx. A critical behavior occurs when a new build fails: the platform typically maintains the previo
Background The readthedocs.yml file’s build.commands list can contain multiple shell instructions. A local build that runs these commands in the order written often succeeds, yet the same project may fail on Read the Docs with a generic Command exited with non‑zero status error when more than one command is listed. Ambiguity The official documentation does n
Managing Versioning Constraints Read the Docs allows administrators to define the primary stable release and versioning behavior through two primary interfaces: the .readthedocs.cfg configuration file tracked in version control or the project dashboard settings. When managing a project with frequent tag updates and a strict requirement for version-controlled
Read the Docs renders HTML from Sphinx sources and stores build artifacts per project version and branch. Rendered pages are then served through a CDN that caches both HTML and static assets. The latest and stable aliases are mutable pointers to the most recent successful build, while versioned URLs such as /en/1.2/ are effectively immutable. Because an alia
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