0.5.4

This release is a bug fix release before upcoming major changes.

• Compatibility fixes for upcoming skylark alterations.
• go_library rules now propagate transitive depsets of the GoLibrary provider rather than individual fields
• Better support for coverage, now works on more than just the package under test
• Experimental support for a GOPATH-like source export system to run tools on
• Experimental support for generating "flat" build files in gazelle
• Minor bug fixes

0.5.3

Go Rules

• go_library supports cgo when the cgo = True argument is given. cgo_library is no longer needed and is now deprecated.
• Race detection is supported. You can use it in tests with bazel test --features=race //....
• go_embed_data (a new rule) lets you embed data files in generated Go code.
• go_test accepts a rundir attribute that lets you specify where the test should run. Test binaries will no longer attempt to change directories when run outside of Bazel.
• Lots of bug fixes and refactoring.

Gazelle

• Gazelle now accepts the update and fix commands. update is the normal, default behavior. fix will revise existing build files with deprecated rules like cgo_library. We plan to add more commands with different flags in the future.
• Rewrote the Gazelle documentation.
• Lots of bug fixes and refactoring.

0.5.2

This is a quick fix release.

• Fixed usage of declared providers and avoided mixing declared and old-style providers.
• go_binary now produces static binaries through the static output group.
• Bazel 0.5.2 is now the required minimum version.

0.5.1

Go rules

• Dependency checking is now strict: go_library, go_binary, and go_test must now include a library in deps for each package they import. Previously, transitive deps were allowed. This lets us speed up the build by only passing direct deps to the compiler.
• cgo_genrule is deprecated. It now just invokes cgo_library with tags = ["manual"]. Please use cgo_library directly when possible.
• Several internal improvements were made to cgo_library. We are planning to consolidate it with go_library some time in the future.
• deps are now propagated through the library attribute. This means, for example, a go_test rule doesn't need to repeat deps specified in a go_library under test, though doing so is encouraged if the go_test references those dependencies itself.
• go_test will now always change to the package directory before running test cases. This was previously broken for tests in external repositories.

Gazelle

• Generated .go files will now be included in rules that Gazelle creates. Gazelle discovers these files by looking at filenames in out and outs attributes of other rules in BUILD files.
• Gazelle only generate BUILD files in testdata directories if there are no .go files, BUILD files, or BUILD.bazel files in any subdirectory. Previously, Gazelle did not recurse into testdata directories at all.
• Go release tags (e.g., go1.8) are treated as unknown (neither true nor false). Gazelle will include files with these tags, whether or not they are negated. This avoids some confusing situations where Gazelle is compiled with a different version of Go than the one used to build a project.
• Several improvements for merging with existing files. copts and clinkopts attributes are now merged. visibility won't be added if a package rule with a default_visibility attribute is present. Comments are preserved on existing elements. deps are now sorted according to buildifier rules.

0.5.0

Features

• go_repository replaces new_go_repository for dependencies with
  and without BUILD or BUILD.bazel files. go_repository will
  generate these files using Gazelle if they are not already present.
• Import paths may be specified explicitly using the importpath in
  go_library. This allows for Go subtrees that aren't at the top of
  a repository. It also allows flat BUILD files.
• Gazelle generates BUILD files for multiple platforms. Sources with
  build constraints (tags or filename suffixes) and dependencies
  imported from them are now compiled conditionally using select.
• Link stamping in multiple packages is now supported via the x_defs
  attribute. x_defs may now contain values wrapped in braces (for
  example: {VAR}) which are replaced with values from the workspace
  status files.
• Rules are substantially cleaned up and organized. Assemble, compile,
  and link actions are rewritten in Go, avoiding incompatibilities and
  quoting problems with Bash.
• Preliminary support for toolchains.

Bug fixes

• cgo_library now allows sources in multiple directories.
• cgo_library no longer assumes srcs is a list (it can now include
  select calls).
• go_binary and go_test no longer expose .a files in outputs.
• All rules now allow target names with slashes.
• If multiple packages are present after applying build constraints,
  Gazelle will generate BUILD files for the package matching the
  directory name. If there is no match, Gazelle will report an error.
• Gazelle is much faster when running in external mode on repositories
  with lots of external dependencies.
• Gazelle no longer removes # keep comments from existing sources.
• Many more...

0.4.4

This release is a cherry-pick of #428 on top of 0.4.3. This adds support for the darwin_x86_64 cpu value, which will become standard in Bazel soon.

0.4.3

Features

• Upgraded to Go 1.8.1 and provided backward compatibility for tests in 1.7.5.
• Support for build constraints (build tags and filename suffixes) in go_library, cgo_library, go_test, and go_binary. You can now add all your sources to your rules, and they will be filtered during compilation.
  • Note: Gazelle also filters sources with build constraints. This behavior will be removed when #339 is fixed.
• go_repositories now supports custom Go versions. Versions can be specified with a simple version string (e.g., "1.8.0") or by declaring a separate Bazel repository and providing that through the go_linux or go_darwin attributes.
• go_repository now supports vcs and importpath attributes. This enables repositories with different URLs and import paths.
• gc_goopts and gc_linkopts attributes can be used to pass additional options to the compiler and linker.
• protoc and protoc_gen_go can now be overridden in go_proto_library. Also added an ignore_go_package attribute.
• Gazelle now adds a data dependency on testdata directories.

Bug fixes

• Fixed repositories rules that depended on the real names of repositories. This broke when one of our dependencies (github.com/bazelbuild/buildifier) was renamed to buildtools. A quick fix was backported to 0.4.2 and 0.3.4.
• Fixed -mode diff in Gazelle. It now produces a regular textual diff.
• Gazelle no longer attempts to rename files with -mode fix or -mode print.
• Gazelle can now find # gazelle:ignore comments that aren't at the top of a file.
• Bash scripts generated by rules are now executed as commands instead of executable files. This is required on Windows.
• Fixed an infinite recursion issue on Windows.
• data files are now propagated transitively across dependencies.

0.4.2

This release fixes a break which was caused by github.com/bazelbuild/buildifier being renamed to buildtools. The following changes are cherry-picked:

• #319 go_repository: add importpath and vcs flags. This allows us to have separate import paths and remote URLs for repositories.
• #362 Fetch buildifier from new location. This allows the buildifier zip to be extracted with the new name.

0.3.4

This release fixes a break which was caused by github.com/bazelbuild/buildifier being renamed to buildtools. The following changes are cherry-picked:

• #319 go_repository: add importpath and vcs flags. This allows us to have separate import paths and remote URLs for repositories.
• #362 Fetch buildifier from new location. This allows the buildifier zip to be extracted with the new name.

0.4.1

Features

• Upgraded to Go 1.8.0
• Upgraded protobuf to 3.2.0
• #233 - Support for link stamping in go_binary and go_test with the linkstamp attribute.
• #272 - Cases within go_test targets can be filtered with --test_filter

Bug fixes

• #257 - gazelle lists loaded symbols in sorted order to avoid conflicts
• #266 - gazelle no longer reformats files with "# gazelle:ignore".
• #274 - cgo libraries are now built with -pthread or -mthreads
• #277 - empty go_prefix("") no longer breaks the linker