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2023-03-10 r/5945 refactor(tvix/store/blobwriter): don't cloneFlorian Klink1-2/+1
This already is a &CS, so we don't need to clone(). Change-Id: I5397a5948ae7fe4781f18df760a79047f83dca01 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8243 Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su>
2023-03-10 r/5944 refactor(tvix/store): clippyFlorian Klink1-1/+1
Change-Id: Ib41c766a45e7d5467a4e5e90e1c00b009121959a Reviewed-on: https://cl.tvl.fyi/c/depot/+/8238 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: flokli <flokli@flokli.de>
2023-03-10 r/5943 refactor(tvix/store): impl Default for MemoryBlobServiceFlorian Klink2-10/+2
Change-Id: I78a4cd86cb364b970e99393579808e773db5ceb2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8237 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de>
2023-03-10 r/5942 refactor(tvix/store): impl Default for MemoryChunkServiceFlorian Klink2-10/+2
Change-Id: If1ceb870e9e5d03b651923a3a786350a8663e990 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8236 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2023-03-10 r/5941 refactor(tvix/store): impl Default for MemoryDirectoryServiceFlorian Klink2-10/+2
Change-Id: Ie75a1e67c8c0499ff10f60d90251b768937dad3a Reviewed-on: https://cl.tvl.fyi/c/depot/+/8235 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de>
2023-03-10 r/5940 refactor(tvix/store): impl Default for MemoryPathInfoServiceFlorian Klink2-9/+2
Change-Id: I07f83f8aaa6312cc37ce7e7ee2b713e60df23782 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8234 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-03-10 r/5939 feat(tvix/store): use rayon to upload chunks concurrentlyFlorian Klink5-39/+66
Look at the data that's written to us, and upload all chunks but the rest in parallel, using rayon. This required moving `upload_chunk` outside the struct, and accepting a ChunkService to use for upload (which it was previously getting from `self.chunk_service`). This doesn't speed up things too much for now, because things are still mostly linear. Change-Id: Id785b5705c3392214d2da1a5b6a182bcf5048c8d Reviewed-on: https://cl.tvl.fyi/c/depot/+/8195 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5938 feat(tvix/store/import): make sure entries are sortedFlorian Klink1-2/+5
The Directory service does already reject inserting invalid (wrongly sorted) Directory messages, but our test case didn't provoke it. Change-Id: I228e201925e8999186659a2d8da0118db184d9ab Reviewed-on: https://cl.tvl.fyi/c/depot/+/8167 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5937 feat(tvix/store): move to daemon subcommand, add import subcommandFlorian Klink1-45/+106
This exposes the previous default behavior at the `tvix-store daemon` subcommand. It also adds a `tvix-store import` command, which will ingest a given path into the store. Change-Id: Ide14f1d409b9364e7f98090690c744326486e470 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8166 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5936 refactor(tvix/store): move entrypoint to src/bin/tvix-store.rsFlorian Klink2-3/+2
Change-Id: Ibb83be75a2be27debd9e85b43c1b824f59e54dab Reviewed-on: https://cl.tvl.fyi/c/depot/+/8165 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5935 feat(tvix/store): use Memory*Service instead of temporary sledFlorian Klink1-8/+8
Change-Id: I65d2030aa643b6937dd92baa85db033bdce38b02 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8208 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5934 feat(tvix/store): add new_temporary for all Sled servicesFlorian Klink11-118/+107
This provides a service using /dev/shm, that's deleted once the reference is dropped. Refactor all tests to use these, which allows getting rid of most TempDir usage in the tests. The only place where we still use TempDir is in the importer tests, which work on a filesystem path. Change-Id: I08a950aa774bf9b46d9f5c92edf5efba36053242 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8193 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5933 fix(tvix/store/proto/grpc_blobservice_wrapper): buffer recv dataFlorian Klink1-7/+14
While we don't want to keep all of the data in memory, we want to feed a reasonably-enough buffer to the chunking function, to prevent unnecessarily trying to chunk over and over again. Change-Id: I5bbe2d55e8c1c63f8f7ce343889d374b528b559e Reviewed-on: https://cl.tvl.fyi/c/depot/+/8160 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5932 feat(tvix/store): add import::import_pathFlorian Klink7-0/+392
This imports the contents at a given Path into the tvix store. It doesn't register the contents at a Path in the store itself, that's up to the PathInfoService. Change-Id: I2c493532d65b90f199ddb7dfc90249f5c2957dee Reviewed-on: https://cl.tvl.fyi/c/depot/+/8159 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5931 refactor(tvix/store/tests/nar_renderer): only upload EMPTY_BLOBFlorian Klink1-16/+14
This also uploaded HELLOWORLD_BLOB_CONTENTS before, but it's not referred from anywhere in the fixture. Change-Id: I823133afe0f08d18a59e2ac4e4d4bb7d34ce8a2b Reviewed-on: https://cl.tvl.fyi/c/depot/+/8158 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5930 refactor(tvix/store/tests): move nar contents to fixturesFlorian Klink2-90/+88
Change-Id: I89a700240e7250a4d93eb8c4235e79c29ecb7f64 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8157 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5929 refactor(tvix/store/tests): move fixtures into separate moduleFlorian Klink7-95/+94
Change-Id: I362dbf0899e4dc42114fd2e6a8fa7f537e9ea138 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8156 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5928 refactor(tvix/store/tests): move gen_*_service() into helperFlorian Klink7-71/+57
This allows hiding to tests what exact implementation we're using, when testing things that do something with a store, but don't care what's used for underlying storage. Change-Id: I7cdf60fd73c25d5050159cb31ec177db2bc2a7f1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8155 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5927 refactor(tvix/store): move blob splitting into a BlobWriter structFlorian Klink4-76/+172
This will moves the chunking-as-we-receive logic that so far only lived in grpc_blobservice_wrapper.rs into a generic BlobWriter. Change-Id: Ief7d1bda3c6280129f7139de3f6c4174be2ca6ea Reviewed-on: https://cl.tvl.fyi/c/depot/+/8154 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5926 feat(tvix/store): do not buffer blob dataFlorian Klink2-73/+139
Use the FastCDC::cut function to ask fastcd for cutting points as we receive the data. Make sure to keep the last chunk in the temporary buffer, as we might not actually cut at the end. Also, use rayon to calculate the blake3 hash if the input data is > 128KiB. Change-Id: I6195f3b74eac5516965cb12d8d026aa720c8b891 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8135 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5925 feat(tvix/store): bump fastcdc, use v2020 versionFlorian Klink4-6/+6
This switches away from the less canonical "ronomon" version to the implementation as described in the [paper](https://ieeexplore.ieee.org/document/9055082) by Wen Xia, et al., in 2020. That version uses 64-bit hash values and tends to be faster than both the ronomon and v2016 versions, and produces the same chunking as the 2016 version. As per https://docs.rs/fastcdc/latest/fastcdc/#implementations-1, it's the recommended choice. The crate also gained support for streaming version of chunkers: https://docs.rs/fastcdc/latest/fastcdc/#large-data, which might be useful. Change-Id: Ieabec3da54eb2b73c045cb54e51f7a216f63641e Reviewed-on: https://cl.tvl.fyi/c/depot/+/8134 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5924 feat(tvix/store): add --json argFlorian Klink4-4/+82
This configures logging as JSON. Change-Id: I22cdda84de215bfceda4e9d47bc8d487a5451a6e Reviewed-on: https://cl.tvl.fyi/c/depot/+/8130 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5923 chore(tvix/store): remove old implementationsFlorian Klink8-784/+0
These were implementing against the (more complicated) gRPC interface, for which we now have a wrapper. Change-Id: I0a8284493718ab99618a1d21a76df4d173edb899 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8100 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5922 refactor(tvix/store): use GRPC Wrappers and new servicesFlorian Klink2-10/+30
This swaps out the implementation used in the main entrypoint. We now use the non-gRPC aware Sled*Service, and wrap it with GRPC*ServiceWrapper to spin up the gRPC server. Change-Id: I5a1236c0612eee85e49891062040127c8bd95058 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8106 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5921 feat(tvix/store): add tests for GRPCPathInfoServiceWrapperFlorian Klink2-0/+108
Change-Id: I22de33c28c132fc9710ddecd0e9158ee3b3ef94b Reviewed-on: https://cl.tvl.fyi/c/depot/+/8108 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5920 feat(tvix/store): add GRPCPathInfoServiceWrapperFlorian Klink2-0/+87
This exposes a proto::pathinfo_service_server::PathInfoService for a directoryservice::PathInfoService and a way to calculate NARs. Change-Id: I30cd058562f83d063c78b84976ec97190de49400 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8097 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5919 feat(tvix/store): add pathinfoserviceFlorian Klink4-0/+165
This adds a PathInfoService trait, and an implementation for it using sled, and one using a HashMap. Change-Id: I85fe4c9b6105808d7b0c095441326424ffc2d2bb Reviewed-on: https://cl.tvl.fyi/c/depot/+/8099 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5918 feat(tvix/store): add NARCalculationService trait and implFlorian Klink5-3/+97
This adds a NARCalculationService trait, which will take a root node, and provide a proto::CalculateNarResponse in return. It also adds a NonCachingNARCalculationService implementation, that will simply always render the NAR in memory to calculate the size and sha256, without any caching. Change-Id: Id1ffb18559212fa6001f70f2634bbc3dfd0aa343 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8096 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5917 feat(tvix/store): validate blob size in NARRendererFlorian Klink3-0/+115
Make sure the blob size in the current proto node matches what we get back from the blob backend. Change-Id: I939fa18f37c7bc86ada8a495c7be622e69ec47f8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8129 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5916 refactor(tvix/store): don't use anyhow::Result<()> in testsFlorian Klink1-11/+6
It's much easier to just unwrap the TempDir::new() result. Change-Id: I7b05bc18f3146401e30e1cc2bb412503c5171a66 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8128 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5915 chore(tvix/store): move NAR rendering logic into Renderer structFlorian Klink5-181/+275
This moves the logic rendering NARs to a struct using the previously introduced, more granular BlobService, ChunkService and DirectoryService. Instead of passing them around to the helper functions, they're kept as members of a struct. Remove the async invocations in the nar_renderer tests, there's nothing async in here. Change-Id: Ic6d24aaad68a1fda46ce29f2cdb5f7b87f481d5c Reviewed-on: https://cl.tvl.fyi/c/depot/+/8095 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5914 feat(tvix/store): add tests for GRPCDirectoryServiceWrapperFlorian Klink2-0/+263
Change-Id: Iccf70664cd5dd8ea22e0b43002d2ff1a9680870a Reviewed-on: https://cl.tvl.fyi/c/depot/+/8102 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5913 feat(tvix/store): add GRPCDirectoryServiceWrapperFlorian Klink2-0/+232
This exposes a proto::directory_service_server::DirectoryService for a directoryservice::DirectoryService. Change-Id: I191a6e44e5bce10d904b5f10f0073d6adaf1f572 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8094 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5912 feat(tvix/store): add directoryserviceFlorian Klink4-0/+182
This adds a DirectoryService trait, and an implementation for it using sled, and one using a HashMap. Change-Id: Ida61524b2ca949e1b3a78089a5aa7d9f9800c8d7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8093 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5911 feat(tvix/store): add tests for GRPCBlobServiceWrapperFlorian Klink2-0/+211
Change-Id: I0c9a2d887b5b94c43afee97a8a1e701cc9f74f23 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8098 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5910 feat(tvix/store/blobservice): add GRPCBlobServiceWrapperFlorian Klink3-0/+244
This takes a BlobService and ChunkService in the constructor, and provides a [proto::blob_service_server::BlobService] trait for it. Implementing proto::blob_service_server::BlobService is a lot of surface to cover, and providing this wrapper will make individual implementations taking care of how to store chunks or chunking information much simpler. Change-Id: Ia7b46484fb3ac9104354d496ff2922dca96ff7b9 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8092 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5909 refactor(tvix/store): remove anyhow::Result in directory it testFlorian Klink1-3/+1
There's no `?` being used. Change-Id: Ifbfd88f6056e0064d11458cb335d05b333ec7b6b Reviewed-on: https://cl.tvl.fyi/c/depot/+/8127 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-03-10 r/5908 refactor(tvix/store): remove useless clone in testFlorian Klink1-1/+1
Change-Id: If62887cbc3338110cb7c815ec2ee2160fae04353 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8111 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-10 r/5907 chore(tvix/store): move protos into separate mod.rsFlorian Klink6-3/+6
This allows adding more stuff into this namespace, from different files. Also move tests on proto-related code from src/tests to src/proto/tests. Change-Id: I49e066fce90efbc18e16d68f94497b32ed5625c0 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8091 Reviewed-by: tazjin <tazjin@tvl.su> Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
2023-03-10 r/5906 feat(tvix/store): add blobreaderFlorian Klink2-0/+386
A BlobReader can be used to read a blob, which might consist out of multiple chunks. Chunks are fetched from a ChunkService. Change-Id: I1806225b0052adaa4a2320b79b744e554e524ee3 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8088 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz> Reviewed-by: tazjin <tazjin@tvl.su>
2023-03-09 r/5905 feat(tazjin/nixos): manage some chromium settings in NixVincent Ambo4-1/+32
Change-Id: Idec699f2c52385dbb4cceb9aece1e1f246d2f619 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8233 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-03-09 r/5904 chore(tazjin/nixos): enable docker on tverskoy for a talkVincent Ambo1-1/+2
Change-Id: Ie5caa5648d34a4163e752f121edd8e828c922a77 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8232 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: tazjin <tazjin@tvl.su>
2023-03-09 r/5903 chore(tazjin/nixos): reduce number of browsersVincent Ambo1-2/+1
One normal chromium is enough. google-chrome is not needed because Chromecasts usually don't work anymore anyways. Change-Id: I48bed05c56bd6f450be393cf727930eaad5cd6b9 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8231 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: tazjin <tazjin@tvl.su>
2023-03-08 r/5902 fix(ops/terraform): s/TARGET_ADDRESS/TARGET_HOSTFlorian Klink1-1/+1
We missed renaming this as well while iterating over https://cl.tvl.fyi/c/depot/+/7950. Change-Id: I704d3b60bb3beb1a2148e27bdd4a49075a6649b3 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8230 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-03-08 r/5901 fix: make depot-gcroot derivation a plain list of out pathsVincent Ambo1-6/+5
This just creates a text file (similar to the propagated deps file) which lists the outpaths of all targets. It's unclear why the previous fix didn't work, but it was done solely based on docs not on reading code. In general we don't really need a setup hook though and nobody remembers why that was the solution we used anyways, so lets remove it. Change-Id: I2a945925f4fa56b272aa44c29229b6a1aefa80e6 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8228 Reviewed-by: flokli <flokli@flokli.de> Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-03-08 r/5900 fix: use `depsTargetTargetPropagated` for depot's gcrootVincent Ambo1-1/+1
We've been seeing CI failures after a recent nixpkgs bump which only occur on canon *after* a CL has been merged. In these CI failures, the `ci.gcroot` attribute is built to "anchor" the latest canon build, but fails because it tries to execute random non-executable files (e.g. the sqlite database produced by //corp/russian/data-import). From what I can tell, there has been a recent change in nixpkgs where makeSetupHooks' arguments were restructured. What was previously `deps` is now `propagatedBuildInputs`, and `depsTargetTargetPropagated`. The latter is supposed to be used for non-executable targets, according to the docs. This commit changes the entire set to use that flag, as we don't actually want any executable setup hook - just a gcroot. Change-Id: Ib258c4f3b09d746c3d000d1c7480d2b4101ab75e Reviewed-on: https://cl.tvl.fyi/c/depot/+/8227 Autosubmit: tazjin <tazjin@tvl.su> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2023-03-07 r/5899 feat(tvix/eval): introduce generators moduleVincent Ambo7-11/+897
This module contains the request/response types for generators requesting actions from the VM. For most of these, an async helper function is added that will be used inside of generator functions to make use of these requests/responses instead of constructing them directly. Change-Id: I1e085f88adaf784a34867957a0e82532d3a83d7c Reviewed-on: https://cl.tvl.fyi/c/depot/+/8148 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-07 r/5898 refactor(tvix/eval): merge OpCall & OpTailCallVincent Ambo3-24/+0
As applies are thunked, there was no situation where OpCall could be emitted. In practice, all calls were already tail calls. Change-Id: Id0d441dcdd86f804d7cddd0cc14f589bbfc75e5b Reviewed-on: https://cl.tvl.fyi/c/depot/+/8147 Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-03-07 r/5897 chore(3p/sources): Bump channels & overlayssterni1-16/+16
* //3p/sources/nixpkgs: switch back to nixos-unstable Change-Id: I68ab0796afe090abcc0fe7eac9fafb880350bd83 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8225 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2023-03-07 r/5896 fix(3p/overlays/tvl): use our patched Nix 2.3 for nix-servesterni1-1/+1
This should avoid having two builds of Nix 2.3 in the closure of whitby and sanduny. Change-Id: Id4b8d34da73d3f579c97adcda44df26992290764 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8192 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI