v1.4.2

Bug fixes on top of 1.4.1.

Fixes

• A race condition in the use of libgit2 was fixed that could
  result in a segmentation fault.
• The Git cache root repository on a just serve endpoint is now
  ensured to always exist and be initialized before being operated on.
• just-mr properly enforces that repository subdir entries are
  non-upwards relative paths.
• Various improvements in the documentation.

v1.5.0-alpha-1733926778

Merge branch 'just-buildsystem:master' into github-ci

v1.4.1

Bug fixes on top of 1.4.0.

Fixes

• Fixes ensuring proper pointer life time and access check.
• Git operations are now properly locked against each other, also
  between processes where necessary.
• just traverse now exits unconditionally after traversal, also
  in case of failure.
• Missing entries in the documentation have been added.

v1.4.0

A feature release on top of 1.3.0, backwards compatible with
respect to rule language, build description, repository description,
and wire protocols. However, the internal representation in local
build root has changed; it is therefore recommended to remove the
local build root on upgrade.

New features

• just serve now also works together with a compatible remote-execution
  endpoint. This uses an extended version of the serve protocol, so
  both, just-mr and just serve need to be at the new version.
• User-defined rules, as well as the built-in rule "generic" can
  now specify a subdirectory in which an action is to be executed.
• just-mr now supports garbage collection for repository roots
  via the gc-repo subcommand. This follows the same two-generation
  approach as garbage collection for the cache-CAS pair; in
  other words, everything is cleaned up that was not used since
  the last call to gc-repo. To accommodate this, the layout in
  the local build root had to be changed. The directory git as
  well as *-map directories are now located in the subdirectory
  repositories/generation-0. On upgrade those have to be manually
  moved there if they should be continued to be used; removing the
  whole local build root is, of course, also a valid upgrade path,
  however losing the whole cache. Not doing anything on upgrade
  will not lead to an inconsistent state; however, the directories
  at the old location will not be used anymore while still using
  disk space.
• The expression language has been extended to contain quote
  and quasi-quote expressions, as well as new built-in functions
  "from_subdir", "nub_left".

Fixes

• The built-in rule "generic" now properly enforces that the
  obtained outputs form a well-formed artifact stage; a conflicting
  arrangement of artifacts was possilbe beforehand.
• The built-in expression functions "join" and "join_cmd"
  now properly enforce that the argument is a list of strings.
  So far, they used to accept a single string, treating it as a
  singleton list.
• A bug was fixed that cased just serve to fail with an internal
  error when building against ignore-special roots.
• just now accurately reports internal errors that occurred on
  the serve endpoint.
• Target-level cache entries are only written if all export targets
  depended upon are also written to or found in cache; previously,
  it was assumed that all export targets not analysed locally
  were local cache hits, an assumption that no longer holds in
  the presence of serve endpoints. This fixes a cache consistency
  problem if the same remote-execution endpoint is used both, with
  and without a serve endpoint.
• A race condition in reconstructing executables from large CAS
  has been removed that could lead to an open file descriptor being
  kept alive for too long, resulting EBUSY failures of actions
  using this binary.
• Internal code clean up, reducing memory footprint, in particular
  for simultaneous upload of a large number of blobs.
• Avoidence of duplicate requests and performance improvements when
  synchronizing artifacts with another CAS.
• Dependencies have been updated to also build with gcc 14.
• Portability improvements of the code by not relying on implementation
  details of the compiler.
• Local execution no longer has the requirement that there exist
  no more files with identical content than the hardlink limit of
  the underlying file system.
• Inside action descriptions, paths are always normalized; this improves
  compatibility with existing remote-execution implementations.
• The size of large object entries has been reduced. The cache
  and CAS must be cleaned up since stable versions before 1.4.0
  cannot use the new format.
• The way of storing intermediate keys of the action cache has
  been changed. The cache must be cleaned up since stable versions
  before 1.4.0 cannot use the new format.
• Various improvements to the tests: dispatching of the summary
  action is now possible, tests are independent of a .just-mrrc
  file the user might have in their home directory
• Various improvements of the documentation.

v1.4.0-alpha-1730128894

Merge branch 'just-buildsystem:master' into github-ci

v1.3.2

Bug fixes on top of 1.3.1.

Fixes

• Portability improvements of the code by not relying on implementation
  details of the compiler.
• Target-level cache entries are only written if all export targets
  depended upon are also written to or found in cache; previously,
  it was assumed that all export targets not analysed locally
  were local cache hits, an assumption that no longer holds in
  the presence of serve endpoints. This fixes a cache consistency
  problem if the same remote-execution endpoint is used both, with
  and without a serve endpoint.
• A race condition in reconstructing executables from large CAS
  has been removed that could lead to an open file descriptor being
  kept alive for too long, resulting EBUSY failures of actions
  using this binary.
• Inside action descriptions, paths are always normalized; this improves
  compatibility with existing remote-execution implementations.
• just-mr --help now returns exit code 0
• Missing output directories of actions are now reported properly.

v1.3.1

Bug fixes on top of 1.3.0.

Fixes

• A bug was fixed that cased just serve to fail with an internal
  error when building against ignore-special roots.
• just now accurately reports internal errors that occured on
  the serve endpoint.
• Dependencies have been updated to also build with gcc 14.

v1.3.0

A feature release on top of 1.2.0, backwards compatible.

Major new features

• New subcommand just serve to start a target-level caching service,
  as described in the corresponding design document.
• just-mr is able to back up and retrieve distribution files
  from a remote execution endpoint. This simplifies usage in an
  environment with restricted internet access.
• just execute now supports blob splitting as new RPC call.
  just install uses this call to reduce traffic if the remote-execution
  endpoint supports blob splitting and the --remember option is given.
  In this way, traffic from the remote-execution endpoint can be reduced
  when subsequently installing artifacts with only small local
  differences.

Other changes

• New script just-deduplicate-repos to avoid blow up of the
  repos.json in the case of chained imports with common dependencies.
• New subcommand add-to-cas to add files and directories to the local
  CAS and optionally also copy them to the remote-execution endpoint.
• The built-in "generic" rule now supports an argument "sh -c",
  allowing to specify the invocation of the shell (defaulting to
  ["sh", "-c"]).
• just describe also shows the values of the implicit dependencies.
• just-mr supports a new form of root, called "foreign file".
• When just-mr executes the action to generate the desired tree of a
  "git tree" repository, it can be specified that certain variables
  of the environment can be inherited.
• The just-mr rc file now supports a field "rc files" to include
  other rc files given by location objects; in particular, it is
  possible to include rc files committed to the workspace.
• Support for fetching archives from FTP and TFTP was added to just-mr
  if it was built with bundled curl. For package builds, libcurl has
  enabled whatever the distro considers suitable.
• The gc subcommand supports an option --no-rotate to carry
  out only local clean up. Part of that local clean up, that is
  also done as part of a full gc, is splitting large files. Note
  that stable versions before 1.3.0 cannot use those split files.
  Hence a downgrade after a gc with 1.3.0 (or higher) requires
  cleaning of cache and CAS.
• The expression language has been extended and, in particular,
  allows indexed access to an array (basically using it as a tuple)
  and a generic form of assertion (to report user errors).
• The analyse subcommand supports a new flag --dump-result to dump
  the analysis result to a file or stdout (if - is given).

Fixes

• The cache key used for an export target is now based on the
  export target itself rather than that of the exported target. The
  latter could lead to spurious cache hits, but only in the case
  where the exported target was an explicit file reference, and a
  regular target with the same name existed as well. Where the new
  cache keys would overlap with the old ones, they would refer to
  the same configured targets. However, we used the fact that we
  changed the target cache key to also clean up the serialization
  format to only contain the JSON object describing repository,
  target, and effective configuration, instead of a singleton list
  containing this object. Therefore, old and new cache keys do not
  overlap at all. In particular, no special care has to be taken
  on upgrading or downgrading. However, old target-level cache
  entries will not be used leading potentially to rebuilding of
  some targets.
• Garbage collection now honors the dependencies of target-level
  caches entries on one another. When upgrading in place, this only
  applies for target-level cache entries written initially after
  the upgrade.
• The taintedness of "configure" targets is now propagated
  correctly in analysis.
• It is no longer incorrectly assumed that every git URL not
  starting with ssh://, http://, nor https:// is a file on the
  local disk. Now, only URLs starting with /, ./, or file://
  are considered file URLs. File URLs, as well as URLs starting
  with git://, http://, or https://, are handled by just-mr
  using libgit2; for every other URL, just-mr shells out to
  git for fetching and the URL is passed to git unchanged.
• Improved portability and update of the bundled dependencies.
• Various minor improvements and typo fixes in the documentation.
• Fixed a race condition in the task queue that could cause (with
  probability roughly 1e-5) a premature termination of the queue
  resulting in spurious analysis failures without explanation (despite
  "failed to analyse target").
• Fixed a race condition in an internal cache of just execute
  used for keeping track of running operations.
• The built-in rule "install" now properly enforces that the
  resulting stage is well-formed, i.e., without tree conflicts.
• Local execution and just execute now correctly create empty
  directories if they are part of the action's input.
• Fixed overwrite of existing symlinks in the output directory
  when using subcommands install and install-cas.
• The format for target-cache shards was changed to a canonical form.
  The new and old formats do not overlap, therefore the correctness
  of the builds is not affected. In particular, no special care has
  to be taken on upgrading or downgrading. However, some target-level
  cache entries will not be used leading potentially to rebuilding of
  some targets.
• The expression "disjoint_map_union" did not verify disjointness
  in all cases; this is fixed now.
• The command line option "--remote-execution-property" can be
  repeated multiple times to list all the properties, but only the
  last one was retained. This is fixed now.

v1.3.0-beta1-1714645780

Merge branch 'just-buildsystem:master' into github-ci

v1.3.0-alpha-1713521989

Merge branch 'just-buildsystem:master' into github-ci