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2020-05-25channels: 'latest-channel-instances' guards against non-forward updates....* guix/channels.scm (latest-channel-instance): Add #:starting-commit and pass it to 'update-cached-checkout'. Return the commit relation as a second value. (ensure-forward-channel-update): New procedure. (latest-channel-instances): Add #:current-channels and #:validate-pull. [current-commit]: New procedure. Pass #:starting-commit to 'latest-channel-instance'. When the returned relation is true, call VALIDATE-PULL. (latest-channel-derivation): Add #:current-channels and #:validate-pull. Pass them to 'latest-channel-instances*'. * tests/channels.scm ("latest-channel-instances #:validate-pull"): New test. Ludovic Courtès
2020-05-25git: 'update-cached-checkout' returns the commit relation....* guix/git.scm (update-cached-checkout): Add #:starting-commit parameter. Call 'commit-relation' when #:starting-commit is true. Always return the relation or #f as the third value. (latest-repository-commit): Adjust accordingly. * guix/import/opam.scm (get-opam-repository): Likewise. * tests/channels.scm ("latest-channel-instances includes channel dependencies") ("latest-channel-instances excludes duplicate channel dependencies"): Update mock of 'update-cached-checkout' accordingly. Ludovic Courtès
2020-05-07channels: Add mechanism to patch checkouts of the 'guix channel....* guix/channels.scm (<patch>): New record type. (apply-patches): New procedure. (latest-channel-instance)[dot-git?]: New procedure. Use 'update-cached-checkout' and 'add-to-store' instead of 'latest-repository-commit'. Call 'apply-patches' when CHANNEL is the 'guix channel. (%patches): New variable. * guix/git.scm (url+commit->name): Make public. * tests/channels.scm ("latest-channel-instances includes channel dependencies") ("latest-channel-instances excludes duplicate channel dependencies"): Mock 'update-cached-checkout' instead of 'latest-repository-commit'. Wrap body in 'with-store' and pass the store to 'latest-channel-instances'. Ludovic Courtès
2019-09-23channels: Allow news entries to refer to a tag....Suggested by Ricardo Wurmus <rekado@elephly.net>. * guix/channels.scm (<channel-news-entry>)[tag]: New field. (sexp->channel-news-entry): Accept either 'commit' or 'tag' in 'entry' forms. (resolve-channel-news-entry-tag): New procedure. (channel-news-for-commit): Move 'with-repository' form one level higher. Call 'resolve-channel-news-entry-tag' on all the news entries. * guix/tests/git.scm (populate-git-repository): Add clause for 'tag'. * tests/channels.scm ("channel-news, one entry"): Create a tag and add an entry with a tag. Check that the tag is resolved and also visible in the <channel-news-entry> record. * doc/guix.texi (Channels): Mention tags in news entries. Ludovic Courtès
2019-09-23channels: Add support for a news file....* guix/channels.scm (<channel-metadata>)[news-file]: New field. (read-channel-metadata): Set the 'news-file' field. (read-channel-metadata-from-source): Likewise. (<channel-news>, <channel-news-entry>): New record types. (sexp->channel-news-entry, read-channel-news) (channel-news-for-commit): New procedures. * guix/tests/git.scm (populate-git-repository): For 'add', allow CONTENTS to be a procedure. * tests/channels.scm ("channel-news, no news") ("channel-news, one entry"): New tests. * doc/guix.texi (Channels): Document it. Ludovic Courtès
2019-07-19channels: Always provide a <channel-metadata> record....This simplifies the code since one no longer needs to think about whether '.guix-channel' was present. * guix/channels.scm (read-channel-metadata): Always pass a string as the first argument to 'channel-metadata'. (read-channel-metadata-from-source): Always return a <channel-metadata> record. (channel-instance-dependencies): Remove now unneeded 'match'. (standard-module-derivation): Assume DIRECTORY is never #f and contains a leading slash. * tests/channels.scm (channel-metadata-directory) (channel-metadata-dependencies): New procedures. ("channel-instance-metadata returns #f if .guix-channel does not exist"): Remove. ("channel-instance-metadata returns default if .guix-channel does not exist"): New test. (make-instance): Use 'write' instead of 'display' when creating '.guix-channel'. (instance--no-deps): Remove dependencies. (instance--sub-directory): New variable. ("channel-instance-metadata and default dependencies") ("channel-instance-metadata and directory"): New tests. ("latest-channel-instances excludes duplicate channel dependencies"): Expect 'channel-commit' to return a string and adjust accordingly. Ludovic Courtès
2019-07-19channels: Strictly check the version of '.guix-channel'....Until now the 'version' field in '.guix-channel' could be omitted, or it could be any value. * guix/channels.scm (read-channel-metadata): Rename to... (channel-instance-metadata): ... this. (channel-instance-dependencies): Adjust accordingly. (read-channel-metadata): New procedure. Use 'match' to require a 'version' field. Provide proper error handling when the channel sexp is malformed or when given an unsupported version number. (read-channel-metadata-from-source): Use 'catch' and 'system-error-errno' instead of 'file-exists?'. * tests/channels.scm (instance--unsupported-version): New variable. (read-channel-metadata): Rename to... (channel-instance-metadata): ... this. Rename tests accordingly. ("channel-instance-metadata rejects unsupported version"): New test. Ludovic Courtès
2019-01-20inferior: 'gexp->derivation-in-inferior' honors EXP's load path....Previously the imported modules and extensions of EXP would be missing from the load path of 'guix repl'. * guix/inferior.scm (gexp->derivation-in-inferior)[script]: New variable. [trampoline]: Write (primitive-load #$script) to PIPE. Add #$output. * tests/channels.scm ("channel-instances->manifest")[depends?]: Check for requisites rather than direct references. Adjust callers accordingly. Ludovic Courtès
2019-01-20channels: Don't pull from the same channel more than once....Previous 'channel-instance->manifest' would call 'latest-channel-derivation', which could trigger another round of 'latest-repository-commit' for no good reason. * guix/channels.scm (resolve-dependencies): New procedure. (channel-instance-derivations)[edges]: New variable. [instance->derivation]: New procedure. * tests/channels.scm (make-instance): Use 'checkout->channel-instance' instead of 'channel-instance'. ("channel-instances->manifest"): New test. Ludovic Courtès
2018-12-09guix: Add support for channel dependencies....* guix/channels.scm (<channel-metadata>): New record. (read-channel-metadata, channel-instance-dependencies): New procedures. (latest-channel-instances): Include channel dependencies; add optional argument PREVIOUS-CHANNELS. (channel-instance-derivations): Build derivation for additional channels and add it as dependency to the channel instance derivation. * doc/guix.texi (Channels): Add subsection "Declaring Channel Dependencies". * tests/channels.scm: New file. * Makefile.am (SCM_TESTS): Add it. Ricardo Wurmus