forked from mirrors/jj
5547e28cea
This lays the basic groundwork to invoke buck2 in a way that barely works and builds nothing. The `jj.bzl` code will be used in some upcoming diffs to add `BUCK` files to the various crates. Signed-off-by: Austin Seipp <aseipp@pobox.com>
115 lines
4.4 KiB
Text
115 lines
4.4 KiB
Text
[cells]
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# 'cells' that are defined in the project. all 'jj' code should remain under
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# 'root', while 'prelude' is the prelude, and third-party is where any vendored
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# code should go.
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root = .
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mode = buck/mode
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prelude = buck/prelude
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toolchains = buck/toolchains
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third-party = buck/third-party
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none = none
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[external_cells]
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# use the built-in prelude that is packaged inside of the buck2 executable. at
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# any time we could vendor it, or use a 'git' cell, if we needed to apply custom
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# patches
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prelude = bundled
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[cell_aliases]
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# these aliases are all required by the upstream buck2 prelude, with stubs for
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# meta-specific cells. 'config//' is occasionally useful for select() calls
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config = prelude
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buck = none
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fbcode = none
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fbsource = none
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[buildfile]
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name = BUILD
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# for the sake of future compatibility and migrations, we don't want any BUILD
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# files in the project to use raw, un-imported symbols from the prelude like
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# 'cxx_library()'; we instead want to make sure every rule is explicitly
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# wrapped, load()ed and called, i.e. they should use 'jj.cxx_library()' instead.
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# do this by loading noprelude.bzl into every BUILD file, which will stub out
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# these bad symbols with an error message.
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includes = root//buck/shims/noprelude.bzl
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[buck2]
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# use sha256 since everything supports it. XXX FIXME (aseipp): blake3?
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digest_algorithms = SHA256
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# enable deferred materialization. this means that intermediate outputs will
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# never get written to disk, and instead will be stored in the remote cache for
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# all intermediate execution steps.
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#
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# we don' use RE yet, but keep these enabled so we don' have to change things or
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# find problems later. this also enables (local disk) sqlite materialization
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# state, and defers writes to the end of actions to help improve performance.
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materializations = deferred
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sqlite_materializer_state = true
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defer_write_actions = true
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# hash all commands in the action graph; this helps avoid some spurious
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# recompilations when the action graph changes, but the actual commands don't.
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# NOTE: this requires `materializations = deferred`
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hash_all_commands = true
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# deferred materialization requires that cache outputs never expire. if they do,
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# a command might fail if it expects a hit on an object that was supposed to be
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# an input. in that case, the buck2d daemon needs to restart to 'purge' its
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# knowledge of that object. this enables that.
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restarter = true
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# enable checking the peak memory in the interpreter, and also set a byte limit
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# for the interpreter. this is useful for catching runaway memory usage in BUILD
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# files just in case people start going crazy with them.
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check_starlark_peak_memory = true
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# default limit is 5MiB = 5 * 1024 * 1024 = 5242880 bytes
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default_starlark_peak_memory = 5242880
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# also, enforce a max callstack size to prevent ridiculous stack sizes and
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# put a limit on how deep/abstract things can get.
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starlark_max_callstack_size = 50
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[build]
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# set the default execution platform for builds on this machine. NOTE: this
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# platform definition is where remote execution (optionally) is enabled via
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# ExecutionPlatformRegistrationInfo
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execution_platforms = root//buck/platforms:default
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[parser]
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# set the default execution platform for several target patterns. this is
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# required; the main documentation for the format is the source code, I think...
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target_platform_detector_spec = \
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target:root//...->root//buck/platforms:default \
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target:third-party//...->root//buck/platforms:default \
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target:toolchains//...->root//buck/platforms:default
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[project]
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# things that should not be scanned by buck2 for file changes. if you notice
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# something strange is being scanned, it might be worth adding here.
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ignore = \
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.jj, \
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.git, \
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.direnv, \
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.watchman-cookie** \
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target
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[buck2_re_client]
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# default address for the cas/actioncache. this should be public for users so
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# they can always get build results. this does NOT include the 'engine_address'
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# service, which enables actual remote execution. that must be enabled
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# explicitly in .buckconfig.local
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cas_address = https://builds.example.com
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action_cache_address = https://builds.example.com
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# 'instance name', which in RBE is the basic unit of isolation for projects; we
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# always default this for simplicity
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instance_name = jujutsu
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# always use TLS for all build products
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tls = true
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# in .buckconfig.local:
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#
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# [buck2_re_client]
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# engine_address = https://builds.jujutsu.dev
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# http_headers = x-build-api-key:$BUILD_API_KEY
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