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2022-08-30 r/4545 feat(tvix/eval): Implement inherit from outer scope in attrsVincent Ambo3-0/+31
Change-Id: I97fa45059b7f2cbe96eb60bd1821e3e25832df66 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6212 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-30 r/4544 fix(tvix/eval): `?` operator should use OpAttrsOrNotFoundVincent Ambo3-1/+5
Using `OpAttrSelect`, the ? operator will fail when encountering a nested value that is not an attribute set. This however breaks valid code, such as: { bs = 42; } ? bs.a.b The fix is simply to use the same operator used in the `or` statement, which leaves a sentinal on the stack if a field is not found or the value is not an attribute set. Change-Id: Ib28fc8a96e6d592b4cdbc3e65ba129ad8faecd66 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6211 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-30 r/4543 fix(tvix/eval): `or` should handle non-attrset values, tooVincent Ambo3-5/+12
If a nested attrpath encounters a non-set value, the sentinel value denoting a lack of next values should be emitted. This mirrors the behaviour of Nix. Change-Id: Ia80443d5a11243cc6d98dcab1249a3f5fdf77e27 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6210 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-30 r/4542 fix(tvix/eval): allow use of ? operator on non-set typesVincent Ambo4-4/+14
Nix allows this, but always returns false. Tvix needs to do the same. Change-Id: Ic9eec90834a0d0969eea5316d5c25032d3691d94 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6209 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-30 r/4541 fix(tvix/eval): emit correct count in OpAttrPathVincent Ambo4-2/+4
Not sure how exactly this snuck in, but it caused some subtle breakages in deeply nested attribute sets. Change-Id: I8049ce912405d3750031f79cc8d86ff1c3c02c2b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6208 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-30 r/4540 docs(tvix/eval): Use correct syntax for module doc commentsVincent Ambo4-13/+12
Change-Id: I35741856f34b86a538f226a8eaf8806edede60ec Reviewed-on: https://cl.tvl.fyi/c/depot/+/6207 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-30 r/4539 chore(tvix/eval): minor readability improvement in attrsVincent Ambo1-12/+9
Change-Id: If9d9eaf60934e96ec4b41c57818afe0c2a99c862 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6206 Reviewed-by: grfn <grfn@gws.fyi> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-08-30 r/4538 refactor(tvix/eval): remove Error::InvalidKeyTypeVincent Ambo2-9/+1
We're confident that we're handling all branches that can reasonably occur from valid AST, any other cases should be considered a critical evaluator bug and panic rather than surfacing something that looks like user error. Change-Id: If96966eb32b8ff12fcaeb9ea3b0c8fc51b6abd11 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6205 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-30 r/4537 fix(tvix/eval): address various clippy lintsVincent Ambo6-41/+30
Change-Id: I3ea0f51475e80948adfeb5d1620c1f2665cc39bc Reviewed-on: https://cl.tvl.fyi/c/depot/+/6201 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-30 r/4536 feat(tvix/eval): implement attribute set equalityVincent Ambo1-2/+48
Change-Id: Ia25f02610f2575e5e7fca81643e05b40f4a07820 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6200 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-08-30 r/4535 fix(tvix/eval): `null` in dynamic attribute keys skips the elementVincent Ambo1-0/+7
This is actually *tested* behaviour in C++ Nix, so we need to implement it here, too. Change-Id: Ic4a4659a2f04cdd928cbe78a85dae90401515371 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6199 Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-08-30 r/4534 feat(tvix/eval): implement chunk disassembler outputVincent Ambo3-2/+35
This makes for a much nicer view of an execution if `--feature disassembler` is set, for example: tvix-repl> let value = [ 1 2 { a = 1; } ]; in value ++ [ 1 ] === compiled bytecode (11 operations) === 02 OpConstant(1) 02 OpConstant(2) 02 OpConstant("a") 02 OpConstant(1) 02 OpAttrs(1) 02 OpList(3) 02 OpGetLocal(0) 02 OpConstant(1) 02 OpList(1) 02 OpConcat 02 OpCloseScope(1) === runtime trace === 0001 OpConstant(ConstantIdx(0)) [ 1 ] 0002 OpConstant(ConstantIdx(1)) [ 1 2 ] 0003 OpConstant(ConstantIdx(2)) [ 1 2 "a" ] 0004 OpConstant(ConstantIdx(3)) [ 1 2 "a" 1 ] 0005 OpAttrs(1) [ 1 2 { a = 1; } ] 0006 OpList(3) [ [ 1 2 { a = 1; } ] ] 0007 OpGetLocal(0) [ [ 1 2 { a = 1; } ] [ 1 2 { a = 1; } ] ] 0008 OpConstant(ConstantIdx(4)) [ [ 1 2 { a = 1; } ] [ 1 2 { a = 1; } ] 1 ] 0009 OpList(1) [ [ 1 2 { a = 1; } ] [ 1 2 { a = 1; } ] [ 1 ] ] 0010 OpConcat [ [ 1 2 { a = 1; } ] [ 1 2 { a = 1; } 1 ] ] 0011 OpCloseScope(1) [ [ 1 2 { a = 1; } 1 ] ] => [ 1 2 { a = 1; } 1 ] :: list Change-Id: If79c7fd1f0f18255ddb3763c1ba585fda8041b1b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6195 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-30 r/4533 feat(tvix/eval): implement optional runtime tracingVincent Ambo5-1/+67
This adds a `disassembler` feature to the crate configuration that traces the operations executed and the state of the stack at runtime. This can be enabled by compiling with `--feature disassembler`. This will also gain a more sensible layout of code slices eventually. Change-Id: I34c15e1cd346ecc4362b5afba6bf82dd49359d20 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6193 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-30 r/4532 refactor(sterni/emacs): switch to pure gtk emacssterni1-4/+12
This means it'll no longer run under Xwayland. Requires applying small fix to bqn-mode which stopped compiling with emacs HEAD. Change-Id: I998a303a0b98bcd45c1de430462b1069bef8718e Reviewed-on: https://cl.tvl.fyi/c/depot/+/6203 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-30 r/4531 chore(tvix/nix_cli): add default.nixFlorian Klink1-2/+8
This exposes tvix.nix_cli as a proper attribute to readTree, so it's actually built by CI. Change-Id: I3cef085bd872b61c5944270c8926727bf1fa705d Reviewed-on: https://cl.tvl.fyi/c/depot/+/6083 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-08-30 r/4530 chore(3p/sources): Bump channels & overlayssterni2-16/+17
* //users/Profpatsch/writers: adjust for API change in makePythonWriter: Since it has become cross-aware, we also need to provide the buildPackages python set we want to use. Change-Id: I4a201647281827ad983eb2dda6f6305f1ed824e7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6196 Tested-by: BuildkiteCI Autosubmit: sterni <sternenseemann@systemli.org> Reviewed-by: Profpatsch <mail@profpatsch.de>
2022-08-29 r/4529 feat(tvix/eval): emit warnings on useless inheritVincent Ambo2-1/+9
Change-Id: Ifb9993cf8b85393eb43e1b204c7ab2f889b7113b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6194 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-29 r/4528 fix(tvix/eval): skip inherit with no explicit parent in letVincent Ambo1-2/+7
Using `inherit` in a let-binding can not possibly have an effect, as the given identifier is already bound exactly the same way in the current scope. This introduces a subtle bug that is fixed later on, as there actually *is* a (single) condition where these inherits are meaningful. Change-Id: I8b24f0edcfe80db8153bb7e86cf478d36957d6f8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6192 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-08-29 r/4527 test(tvix/eval): add basic tests for let expressionsVincent Ambo6-0/+17
Change-Id: I788504f0c1848a1422c99006bf659738df614716 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6191 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-08-29 r/4526 fix(wpcarro/emacs): Support rust.el PATH depsWilliam Carroll1-0/+3
There might be a better way to do this using `direnv`'s `use_nix` and shlevy's `nix-buffer` Elisp package, but I'm doing this for now. Change-Id: I4246c519f39eea1bde3191762b184b37d30fbeed Reviewed-on: https://cl.tvl.fyi/c/depot/+/6049 Tested-by: BuildkiteCI Reviewed-by: wpcarro <wpcarro@gmail.com> Autosubmit: wpcarro <wpcarro@gmail.com>
2022-08-29 r/4525 feat(wpcarro/rust): Define stdin exampleWilliam Carroll2-6/+24
Pipe Rust strings to shell commands. Change-Id: Id8afeed642d30c79e193fa9b353de081a5843eb5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6197 Reviewed-by: wpcarro <wpcarro@gmail.com> Autosubmit: wpcarro <wpcarro@gmail.com> Tested-by: BuildkiteCI
2022-08-28 r/4524 feat(tvix/eval): add local identifier accessVincent Ambo4-1/+31
This makes basic `let ... in ...` statements work correctly. It does not yet account for the call frames pushed into the VM during function application. Change-Id: I67155171daf1a43011b96716dd9d1ab04b27db33 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6190 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-08-28 r/4523 feat(tvix/eval): detect dynamic identifier names in `let`Vincent Ambo2-4/+48
Nix does not allow dynamic identifiers in let expressions (only in attribute sets), but there are several different kinds of things it considers static identifiers. The functions introduced here put the path components of a let expression into normalised (string) form, and surface an error about dynamic keys if one is encountered. Change-Id: Ia3ebd95c6f3ed3cd33b94e156930d2e9c39b6cbf Reviewed-on: https://cl.tvl.fyi/c/depot/+/6189 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-08-28 r/4522 feat(tvix/eval): compile simple `let ... in ...` expressionsVincent Ambo3-0/+98
These expressions now leave the binding values on the stack, and clean up the scope after the body of the expression. While variable access is not yet implemented (as the identifier node remains unhandled), this already gives us the correct stack behaviour. Change-Id: I138c20ace9c64502c94b2c0f99a6077cd912c00d Reviewed-on: https://cl.tvl.fyi/c/depot/+/6188 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-08-28 r/4521 feat(tvix/eval): prepare structures for simulating locals stackVincent Ambo1-0/+24
These are going to be used during compilation of `let`-expressions to determine stack offsets for local variables. Change-Id: Ibb79f3f1ae86650303f88eacf623ae456458de87 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6187 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-28 r/4520 fix(tvix/eval): use path_clean instead of fs::canonicalize for pathsVincent Ambo3-10/+14
Canonicalisation performs much more functionality than what C++ Nix implements for paths, and causes some undesirable behaviour (e.g. handling non-existant files becomes difficult, but should be possible in literals). Instead, the path_clean crate provides a pure normalisation method. There is an intention to add this to Rust itself: https://github.com/rust-lang/rfcs/issues/2208 Change-Id: I775d238136db0a52cf6b12a68985833c8fb32882 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6186 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-28 r/4519 feat(tvix/eval): resolve relative path literalsVincent Ambo4-10/+37
Resolves relative paths (e.g. `./foo`) either relative to the location of the Nix file, or relative to the working directory if none is supplied. Change-Id: I70ec574657b221b458015117a004b6e4a9c25a30 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6185 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-28 r/4518 refactor(tvix/eval): implement error variant for path resolutionVincent Ambo2-7/+16
There are multiple things that can theoretically fail while resolving a path, as some of it includes I/O. A new error variant has been added for this and appropriate errors have been introduced. Change-Id: Ie222245425207dabbf203166eb5ed1eec0114483 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6184 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-28 r/4517 feat(tvix/eval): support absolute and home-anchored pathsVincent Ambo1-1/+32
These two paths are the easiest to handle, as they are simply built up from the components supplied in the text node and then normalised. Note that the normalisation of fs::canonicalize includes symlink resolution, which Nix does not actually do. We will need to fix that at some point. Change-Id: I54158f0684f197dd2a2583f7d0982d54c7619993 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6183 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-27 r/4516 chore(tvix/eval): add variant_size_differences warning to `Value`Vincent Ambo1-0/+1
Change-Id: I2f4719a81512a9a970edf22390afed490125bda7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6182 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-08-27 r/4515 feat(tvix/eval): add Path representation to Value enumVincent Ambo1-1/+4
Change-Id: I4827384201912131ea8fc2362188dcd862b94852 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6181 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi> Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-27 r/4514 refactor(tvix/eval): use `write!` macro instead of `f.write_fmt`Vincent Ambo2-8/+7
grfn pointed out in cl/6082 that this is actually the desugaring of the write! macro, so it doesn't make sense to write it out. Change-Id: If7c055b042ad22b034722aec1eaadba92736d684 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6180 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: grfn <grfn@gws.fyi>
2022-08-27 r/4513 refactor(tvix/eval): rename Chunk::add_* functions to ::push_*Vincent Ambo2-55/+55
grfn pointed out in cl/6069 that naming them like this makes it clear that things are being added to the end of the state. Change-Id: I6a23215c4fef713869a3c85b0dde1ebbda7637e9 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6179 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-08-27 r/4512 chore(tvix/eval): explicitly set #[repr(transparent)] on wrappersVincent Ambo3-0/+3
For representation wrappers that are used to control the visibility of type internals, this ensures that the wrapper does not increase the size of the type. In practice, the optimiser likely does this anyways but it is good to guarantee it. Change-Id: Ic6df7d668fe6006dfbd5b6cfcfc2088afa95b810 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6178 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-08-26 r/4511 test(tvix/eval): make sure all language tests also pass with C++ Nixsterni2-2/+121
Change-Id: I8428a82db9bf7af5c0273178acbf3e4d7355f5d9 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6153 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2022-08-26 r/4510 chore(tvix/eval): add variant_size_differences warning for OpCodeVincent Ambo1-0/+1
This makes it possible to quickly detect code errors that might blow up the size of the OpCode type. Change-Id: I7662dd0aa30c4762c0f9e4fa346418c9ca8b9994 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6177 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi>
2022-08-26 r/4509 feat(tazjin/emacs): add `find-cargo-project` functionVincent Ambo1-0/+10
This is useful for eglot launching rust-analyzer when I'm outside of a depot project. Change-Id: I1fa1dc11e3eabe4bdedbd6389b55411641391c7e Reviewed-on: https://cl.tvl.fyi/c/depot/+/6176 Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2022-08-26 r/4508 feat(tvix/eval): add warning for deprecated URL literalsVincent Ambo2-6/+12
Change-Id: I8a9cfcb5d99680344ee0e3461a4a52526b846c92 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6175 Tested-by: BuildkiteCI Reviewed-by: grfn <grfn@gws.fyi> Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-26 r/4507 feat(tvix/eval): add mechanism for emitting warnings from compilerVincent Ambo4-5/+39
These can be used predominantly to emit warnings about things that the compiler can infer, such as deprecated language features. Change-Id: I3649c625459d7f3f95cdf42d5c651d23d66569ec Reviewed-on: https://cl.tvl.fyi/c/depot/+/6174 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-26 r/4506 fix(tvix/compiler): handle literal URL valuesVincent Ambo1-1/+8
The parser creates this node type from literal URL values. Technically these are deprecated and have been removed from nixpkgs. Change-Id: I4d05034dd9b4d8348e4ed8a2bbb37c1b6ccef8bc Reviewed-on: https://cl.tvl.fyi/c/depot/+/6173 Reviewed-by: grfn <grfn@gws.fyi> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
2022-08-26 r/4505 feat(tvix/eval): use rustyline crate for REPLVincent Ambo1-19/+49
This is a substantially nicer experience, immediately granting us history, proper exiting and so on. Change-Id: Iba4cb1713b9ac53d0799722bdbe2cd0e94a2f527 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6171 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-26 r/4504 chore(tvix/cargo): add dirs dependencyVincent Ambo2-0/+22
This crate provides sensible default locations for directories on different platforms. Change-Id: I0b61cc7f626dc6c8df903ba0f873be24e07d69b5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6170 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-26 r/4503 chore(tvix/cargo): add rustyline dependencyVincent Ambo2-0/+291
There's a few options for this, but this one seems fine in terms of features and doesn't have an insane amount of dependencies. Change-Id: Ief99e66bfee0ba0ba1cfdd09568b002121b7325b Reviewed-on: https://cl.tvl.fyi/c/depot/+/6169 Reviewed-by: grfn <grfn@gws.fyi> Tested-by: BuildkiteCI
2022-08-26 r/4502 style(tvix/eval): minor rephrasing in a commentVincent Ambo1-1/+1
From cl/6070 Change-Id: I8ce8c1b40032d85cd2c01b04e225ae4a2842c7b7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6172 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-26 r/4501 test(tvix/eval): add tests for the attrset `or` operatorVincent Ambo8-0/+8
Change-Id: I81f3ab94d8b987f5a4c87a27b2bcbb49cccee1ce Reviewed-on: https://cl.tvl.fyi/c/depot/+/6168 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-26 r/4500 feat(tvix/compiler): implement `or` operator for attribute setsVincent Ambo1-2/+76
This operator allows for accessing attribute sets (including nested access) while also providing a default value. This is one of the more complex operations to compile, as it needs to keep track of a fairly large number of jumps that all need to be patched correctly. To make this easier to understand there's a small diagram included in the comments. Change-Id: Ia53bb20d8f779859bfd1692fa3f6d72af74c3a1f Reviewed-on: https://cl.tvl.fyi/c/depot/+/6167 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-26 r/4499 feat(tvix/vm): add opcodes for new Value::NotFound sentinelVincent Ambo3-3/+24
This sentinel value is going to be used for certain nested accesses into attribute sets. There is a new instruction similar to `OpAttrsSelect` which leaves the sentinel on the stack if a key is not found, instead of raising an error. Additionally, a new jump instruction makes its jump operation conditional on finding such a sentinel value. Change-Id: I2642f0a0bcc85bbe0ead68ea09a7dd794dbedeac Reviewed-on: https://cl.tvl.fyi/c/depot/+/6166 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2022-08-26 r/4498 refactor(tvix/value): replace static representation with SmolStrVincent Ambo5-12/+15
The only uses of the static variant were for `"name"` and `"value"`, which are both small enough to fit into a SmolStr. The size of NixString accomodates `String` anyways, so we may as well inline them. Additionally smol_str is already in the dependency graph because rnix uses it, and using it for representations of identifiers is sensible. Change-Id: I9969312256d1657d69128e54c47dc7294a18ce58 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6165 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: grfn <grfn@gws.fyi>
2022-08-26 r/4497 chore(tvix/eval): implement improved Display for internal valuesVincent Ambo1-1/+2
Having these visible more explicitly is useful while debugging. Change-Id: I86b497883063d32792b635eb4514b7aeae484af4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6164 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: grfn <grfn@gws.fyi>
2022-08-26 r/4496 feat(tvix/eval): implement nested '?' operatorVincent Ambo1-13/+25
Implements the nested presence check operator for attribuet sets by traversing the chain of lookups through instructions that push/pop sequentially deeper attribute sets onto the stack. Note that this commit introduces a bug in case of nested attributes not being found, which is fixed in a later commit. Change-Id: Ic8b4c8648736f6cb048e3aa52592e4d075bf0544 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6163 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: grfn <grfn@gws.fyi>
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