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2022-09-07 r/4720 feat(tvix/eval): track source spans for listsVincent Ambo1-1/+1
Change-Id: Icfd057ee29180cac17264bb3299c67eae0051aee Reviewed-on: https://cl.tvl.fyi/c/depot/+/6387 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4719 feat(tvix/eval): track source spans for literal identifiersVincent Ambo1-1/+4
Change-Id: I7ca08c6c0124f653e55fcc86413a847f0a4c50c5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6386 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4718 feat(tvix/eval): track source spans for `?` operatorVincent Ambo1-2/+2
Change-Id: Idb842fb20fab14150455a81ea6c947e75b314d8a Reviewed-on: https://cl.tvl.fyi/c/depot/+/6385 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4717 feat(tvix/eval): track source spans for binary operatorsVincent Ambo1-23/+23
Change-Id: I43e433ff3094232b244d38335d31e56a79ca70c1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6384 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4716 feat(tvix/eval): track source spans for unary operatorsVincent Ambo1-1/+1
Change-Id: I79034a4aa04aea66ec598e33e6eab35e1e19c0d0 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6383 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4715 feat(tvix/eval): track source spans for stringsVincent Ambo1-2/+2
Change-Id: I29e6c7f9e25d1b2e6bafa602c463eb9ccee2131b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6382 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4714 feat(tvix/eval): track source spans for pathsVincent Ambo1-1/+1
Change-Id: I42fbd0bb6c2a8feb520e262a25f59ff27dcd035c Reviewed-on: https://cl.tvl.fyi/c/depot/+/6381 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4713 feat(tvix/eval): track source spans for literalsVincent Ambo1-3/+3
Change-Id: Icfe77f85c4f65b6bf28b8752c2795419e8e396ce Reviewed-on: https://cl.tvl.fyi/c/depot/+/6380 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4712 feat(tvix/eval): add methods for emitting code with tracked spansVincent Ambo2-80/+111
These are not actually used yet; this is in preparation for a multi-commit chain for emitting all the right spans in the right locations. Change-Id: Ie99d6add2696c1cc0acb9ab928917a10237159de Reviewed-on: https://cl.tvl.fyi/c/depot/+/6379 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4711 chore(tvix/eval): thread a codemap::File reference to the compilerVincent Ambo2-5/+21
This instantiates a codemap outside of the compiler and passes a reference to the file currently under compilation to it. Note that the "file" might just be a REPL line. Change-Id: I131ae1ddb6d718e1374750da9ba0b99608c6058d Reviewed-on: https://cl.tvl.fyi/c/depot/+/6378 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4710 refactor(tvix/eval): add and use Compiler::push_op methodVincent Ambo1-60/+65
This is currently just a wrapper around Chunk::push_op, but will gain the span resolution logic in a moment. Change-Id: I862bf9ecff0932f8da6708401ea044b9442c5d5b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6377 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4709 feat(tvix/eval): add data structures for tracking spans in chunksVincent Ambo1-0/+50
This adds a new vector to the chunk data structure which tracks spans into a codemap. The compiler will emit this information to the chunk when adding instructions. The internal representation of the spans is slightly optimised to avoid storing duplicate spans, as there are cases where many instructions might be derived from the same span. Change-Id: I336f8c912e7eb50ea02ed71e6164f651ca3ca790 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6376 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4708 chore(tvix/eval): bump all dependenciesVincent Ambo2-9/+9
Updated the rnix hash manually, and ran `cargo update` for the rest. Change-Id: I457262625d648e25d745efa4d33ae44cb8f21326 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6375 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4707 chore(tvix/eval): add codemap dependencyVincent Ambo2-0/+8
This will be used to track source spans when emitting bytecode. The codemap is a data structure which tracks *all* the source files visited by an evaluation, and makes it possible to represent locations across all of the files using a simple span (i.e. pair of offsets). When reporting errors, this even contains enough information to reconstruct the rnix AST to create fancier reporting in certain cases if desired. Change-Id: I4ae98620b9b150fb5a389bd7f1e12670e3192c62 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6374 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4706 fix(tvix/eval): address current clippy lintsVincent Ambo4-5/+5
Note that I've allowed `needless_lifetimes` for the attribute set iterator, as I find the type easier to understand with these annotations present. Change-Id: I33abb17837ee4813076cdb9a87f54bac4a37044e Reviewed-on: https://cl.tvl.fyi/c/depot/+/6373 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-07 r/4705 feat(tvix/eval): semi-strictly evaluate output values of the VMVincent Ambo3-4/+36
This essentially makes the VM behave like `nix-instantiate --eval --strict`, i.e. data structures are traversed strictly and thunks are forced. Thunks embedded in closures are not forced. This allows us to re-enable tests that were disabled because they needed to output nested thunk contents, but is overall a behaviour that must be configurable later on, as it is not cmopatible with e.g. an evaluation of nixpkgs. Change-Id: I5303a5c8e4322feab1384fdb7712fecb950afca5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6372 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-07 r/4704 feat(tvix/eval): implement NixList::iterVincent Ambo1-0/+4
This does not require a custom iterator type (for now?) Change-Id: I5beb194bd8629571bd4040c69c977c27149807fa Reviewed-on: https://cl.tvl.fyi/c/depot/+/6371 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-07 r/4703 fix(tvix/eval): thread Display & PartialEq through to thunk valuesVincent Ambo2-1/+21
If a thunk is already evaluated, there are cases where due to the memoisation implementation something might observe a value wrapped in a thunk. In these cases, the implementation of `Display` and `PartialEq` must delegate to the underlying value. Note that there are a handful of other cases like these which we need to cover. It is a little tricky to write integration tests for these directly, especially as some of the open-upvalue optimisations coming down the pipe will reduce the number of observable thunks. One test that covers a part of this behaviour is currently disabled (needs some more machinery), but it's being brought back in the next commits. Change-Id: Iaa8cd338c12236af844bbc99d8cec2205f0d0095 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6370 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-07 r/4702 feat(tvix/eval): implement NixAttrs::iter()Vincent Ambo2-1/+121
Implementing iteration over NixAttrs requires a custom iterator type in order to encapsulate the different representations. The BTreeMap for example has its own iterator type which needs to be encapsulated. This is mostly boilerplate code, but for a change some simple unit tests have been added in. Change-Id: Ie13b063241d461b810876f95f53878388e918ef2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6367 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4701 chore(tvix/eval): provide 'static references to "name"/"value"Vincent Ambo1-0/+3
These static strings show up a bunch when dealing with the internals of attribute sets, and having them available as static references is required. Due to the way const expressions are evaluated, taking a reference to the existing NixString::NAME / NixString::VALUE items does not work and the references themselves need to be const-evaluated. Change-Id: If6e75847af978118a3b266fe6a3242321722434d Reviewed-on: https://cl.tvl.fyi/c/depot/+/6366 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4700 refactor(tvix/eval): encapsulate all thunk-forcing logic in moduleVincent Ambo2-22/+44
The VM previously took care of repeatedly forcing a thunk until it reached an evaluated state. This logic is now encapsulated inside of the `Thunk::force` implementation. In addition, force no longer returns a reference to the value by default, leaving it up to callers to decide whether they want to borrow the value or not (a helper is provided for this). Change-Id: I2aa7da922058ad1c57fbf8bfc7785aab7971c02b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6365 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4699 feat(tvix/eval): construct attribute sets lazilyVincent Ambo3-3/+13
This thunks the construction of attribute sets. Because Tvix does not currently have a "strict output" mode, a test had to be disabled that now displays a thunk representation. The test will be re-enabled once that is available. Change-Id: I360332be64cd5c154f9caea21828f6f1b37a265c Reviewed-on: https://cl.tvl.fyi/c/depot/+/6363 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4698 chore(tvix/eval): add release-with-debug cargo profileVincent Ambo1-0/+4
This lets us create a release build with debug info, for use with e.g. perf + hotspot Change-Id: I03897de36c872d318abf1332ca0c1aeabe344ec6 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6362 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4697 fix(tvix/eval): avoid recomputing width in disassemble_op constantlyVincent Ambo1-4/+4
As noticed by sterni in cl/6195 Change-Id: Ie9c1e80e2e709284fa8412334af9188d999f64dc Reviewed-on: https://cl.tvl.fyi/c/depot/+/6361 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4696 fix(tvix/eval): correctly resolve identifiers in inheritVincent Ambo1-21/+4
This should not have grown a second implementation of the identifier resolution logic, but it somehow did. This implementation ended up being incorrect because it did not account for upvalues inside of thunks. Change-Id: Ieb1364d8fe43c96aaf4b125fd4b8a522aedff167 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6360 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4695 chore(tvix/eval): implement Debug for compiler::scope::ScopeVincent Ambo1-1/+2
Change-Id: I112b0119bd0511f26bb72f7e73d867d1b7144a36 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6359 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4694 feat(tvix/eval): insert strictness points for attribute set keysVincent Ambo1-2/+10
All attribute set *key* related operations strictly evaluate all key fragments, including during construction of an attribute set. Change-Id: I3519e5e9b0886c2cdc8615ea7dcb5f7be0c59b3f Reviewed-on: https://cl.tvl.fyi/c/depot/+/6358 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4693 feat(tvix/eval): insert strictness points for unary/binary operatorsVincent Ambo1-1/+17
The arguments of all unary/binary operators that are built in to Nix are forced when encountered. This emits the necessary OpForce operations. Change-Id: I691fcdbebfe7586cfe217c68d44b10b1192f82d1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6357 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4692 chore(tvix/eval): thread `slot` value through all compiler methodsVincent Ambo1-54/+58
With this change any compilation of an expression is aware of its own stack slot if it is leaving identifiers on the stack. Change-Id: I0c9f148ae06b078a46b25180c4961686d5f2e166 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6356 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4691 chore(tvix/eval): thread `slot` value through Compiler:compile_attrVincent Ambo1-17/+23
This threads the current local slot through the `compile_attr` function and all of its callers. At the moment this does not improve any user-facing behaviour, just internally changes the way in which some correct expressions would fail to run. Eventually this slot will need to reach everywhere ... Change-Id: Iba73123dd1ced421093d8fc18ebeeffc16efacf8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6355 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4690 test(tvix/eval): test very simple late-bound identifier accessVincent Ambo2-0/+5
This is the simplest kind of thunk that can be created (and so far the only one the compiler knows how to create), in which an identifier inside a `let` encounters a value that is bound *after* it is initialised. Change-Id: I6ea4408a3baef1e7d5137365d70804283f2dbf8e Reviewed-on: https://cl.tvl.fyi/c/depot/+/6354 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4689 feat(tvix/eval): always emit OpForce as the last instructionVincent Ambo3-0/+14
Change-Id: Id70c987f654dc5d9b47db74e395281309762b468 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6353 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-07 r/4688 feat(tvix/eval): implement OpForce in VMVincent Ambo4-2/+46
This operation forces the evaluation of a thunk. There is some potential here for making an implementation that avoids some copies, but the thunk machinery is tricky to get right so the first priority is to make sure it is correct by keeping the implementation simple. Change-Id: Ib381455b02f42ded717faff63f55afed4c8fb7e3 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6352 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06 r/4687 feat(wpcarro/rust): Define Rc<T> exampleWilliam Carroll3-2/+15
My foray into "smart pointer" land. Change-Id: I4ca775c72168dd34d90bf88fa41149867cd7fdae Reviewed-on: https://cl.tvl.fyi/c/depot/+/6244 Tested-by: BuildkiteCI Reviewed-by: wpcarro <wpcarro@gmail.com> Autosubmit: wpcarro <wpcarro@gmail.com>
2022-09-06 r/4686 feat(wpcarro/emacs): Drop racer.el supportWilliam Carroll2-3/+5
AFAIU `racer` is deprecated in favor of LSP. Change-Id: I8bee3bb32d208b4f21cd7699ae93fc76a69ec964 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6051 Tested-by: BuildkiteCI Reviewed-by: wpcarro <wpcarro@gmail.com> Autosubmit: wpcarro <wpcarro@gmail.com>
2022-09-06 r/4685 chore(overlays/tvl): Remove stale overlaysWilliam Carroll1-29/+0
As the comments explain: > Workaround for srcOnly with separateDebugInfo until > https://github.com/NixOS/nixpkgs/pull/179170 is merged. > upgrade home-manager until the service-generation fix has landed upstream > https://github.com/nix-community/home-manager/issues/2846 > Outdated test-data, see https://github.com/pganssle/zoneinfo/pull/115 > Can be dropped when https://github.com/NixOS/nixpkgs/pull/170450 lands. All of the linked issues appear merged (or closed with a link to a merge PR), so -- barring any failing Buildkite builds -- these may be safe to remove. Change-Id: I85e9f3ba2ca970a11754a85cb9574705144bfdfa Reviewed-on: https://cl.tvl.fyi/c/depot/+/6162 Reviewed-by: wpcarro <wpcarro@gmail.com> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-09-06 r/4684 fix(users/wpcarro): Fix Hadrian pathWilliam Carroll2-2/+2
This looks like a copy-paste error. Change-Id: I21594412075d361d824074b7612c8dbafb4f9f30 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6369 Tested-by: BuildkiteCI Reviewed-by: wpcarro <wpcarro@gmail.com> Autosubmit: wpcarro <wpcarro@gmail.com>
2022-09-06 r/4683 feat(wpcarro/emacs): Set initial-buffer-choice per-hostWilliam Carroll4-4/+7
Work machines should prefer `/hadrian` and personal machines should prefer `/depot`. Change-Id: I03b605cc5ce233767146d83f14f368863897cf8b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6368 Tested-by: BuildkiteCI Reviewed-by: wpcarro <wpcarro@gmail.com> Autosubmit: wpcarro <wpcarro@gmail.com>
2022-09-06 r/4682 fix(tvix/eval): allocate Thunk::upvalues with known capacityVincent Ambo1-1/+1
The capacity (i.e. number of builtins) is known from the lambda, so we can size it correctly right away. Change-Id: Iab0b5a3f47d450fa9866c091ebbbed935b934907 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6351 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06 r/4681 feat(tvix/eval): implement OpThunk for runtime thunk constructionVincent Ambo1-2/+17
Implements an operation very similar to `OpClosure` which populates a thunk's upvalues and leaves it on the stack. Change-Id: I753b4dfeeaae6919316c7028ec361aaa13d87646 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6350 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06 r/4680 chore(3p/sources): Bump channels & overlayssterni1-21/+21
Change-Id: I3a5cca3ac327d6437c8b47fcd496ad4d969b958c Reviewed-on: https://cl.tvl.fyi/c/depot/+/6364 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-09-06 r/4679 refactor(tvix/eval): extract VM::populate_upvalues functionVincent Ambo1-30/+42
This function is reusable between thunks & closures. Change-Id: I44d5f9897b087a385c8e75027d2ff39c48a096f0 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6349 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06 r/4678 refactor(tvix/eval): Carry lambda & upvalues directly in CallFrameVincent Ambo1-13/+25
CallFrame has to work for both thunks & closures (as a thunk is basically a "weird 0-argument closure"). We opt to store the common, relevant fields directly in the frame to avoid having to dereference through the nested structures constantly (which would be especially annoying in the case of thunks). Change-Id: I47781597b84ec5cd55502dba1713e92cf2592af3 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6348 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06 r/4677 refactor(tvix/eval): introduce UpvalueCarrier traitVincent Ambo5-18/+81
This trait abstracts over the commonalities of upvalue handling between closures and thunks. It allows the VM to simplify the code used for setting up upvalues, without duplicating between the two different types. Note that this does not yet refactor the VM code to optimally make use of this. Change-Id: If8de5181f26ae1fa00d554f1ae6ea473ee4b6070 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6347 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06 r/4676 refactor(tvix/eval): simplify thunk representationsVincent Ambo2-8/+8
For now, do not distinguish between closing and non-closing thunks, it will make the initial implementation easier. See Knuth etc. Change-Id: I0bd51e0f89f2c77e90bac63b507e5027b649e3d8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6346 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06 r/4675 feat(tvix/eval): emit thunks for recursive local scope resolutionVincent Ambo1-6/+13
When resolving a value on the same level that is known but not yet defined, emit a thunk. Consider for example: let # v--- requires a thunk a = 1 * b; b = 10; in a Change-Id: I922cb50973ebe05e335a7bc7cb851960cf34733b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6345 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06 r/4674 feat(tvix/eval): Add Compiler::thunk method for emitting thunksVincent Ambo3-1/+41
The logic in this method is *very* similar to `compile_lambda`. It is intended to be called around any expression that should be thunked (such as function applications, attribute set values, etc.). Change-Id: Idfbb2daa9f4b735095378fb9c39a2fd07c8cff91 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6344 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06 r/4673 feat(tvix/eval): introduce Value::Thunk variantVincent Ambo2-1/+61
Introduces the representation of runtime thunks, that is lazily evaluated values. Their representation is very similar to closures. Change-Id: I24d1ab7947c070ae72ca6260a7bbe6198bc8c7c5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6343 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06 r/4672 refactor(tvix/eval): extract compiler's upvalue logic into helperVincent Ambo1-14/+20
This exact same logic is reused for thunk creation. Change-Id: I731db9cc659a1f2ca87db55d58d6ff632f417812 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6342 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-09-06 r/4671 test(tvix/eval): add a test case for nested, deferred upvaluesVincent Ambo2-0/+7
This test case was previously broken by the bug introduced by confusing local and stack indexes. Change-Id: Ibef299dad266c6105deac1da5dde112fe9f640b1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6341 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
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