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2024-05-17Merge "primops: change to std::function, allowing the passing of user data" ↵Puck Meerburg
into main
2024-05-17Merge "Loosen constness on listElems() result" into mainPuck Meerburg
2024-05-17docs: mention importNative/exec in allow-unsafe-native-code-during-evaluationQyriad
Both of these still needs their own actual documentation, but they are at least now mentioned that they exist and what they're enabled by. Change-Id: I235b9e8e627e04ed06611423c8e67a8eca233120
2024-05-16primops: change to std::function, allowing the passing of user dataYorick van Pelt
(cherry picked from commit 48aa57549d514432d6621c1e29f051951eca2d7f) Change-Id: Ib7d5c6514031ceb6c42ac44588be6b0c1c3c225b
2024-05-16Loosen constness on listElems() resultPuck Meerburg
Change-Id: I1caff000362c83e5172413a036c22a2e9ed3ede8
2024-05-15builtins: fix builtins.langVersion docs to state it's deprecatedJade Lovelace
This builtin was always a problem and nixpkgs uses it in exactly one place, to give up if the Nix version is absurdly old. It has no other use cases, and doesn't work in a multi-implementation world anyway. Change-Id: I03c36e118591029e2ef14b091fe14a311c66a08a
2024-05-07remove the autoconf+Make buildsystemQyriad
We're not using it anymore. Any leftover bugs in the Meson buildsystem are now just bugs. Closes #249. Change-Id: I0465a0c37ae819f94d40e7829f5bff046aa63d73
2024-05-05fix integer overflow on i686 with high phys memoryQyriad
sizeof(long) is 4 bytes on i686 GCC. With ~32 GiB of memory and a page size of 4096, there are 7988420 pages. (7988420 * 4096) is bigger than INT32_MAX folks. This has gone unnoticed for 9 years, and only came up thanks to 94ea517db[1] adding integer overflow sensitization checks, which caused this broken code to emit an illegal instruction, crashing Lix the instant the buildsystem ran Lix to generate the docs files. [1]: 94ea517dbe729765b69638190f4bea3f6a632b40 Change-Id: I50bb9ea072aac11b449d79e5d55525887a6e5a99
2024-05-04Remove a URL literal from fetchTarball docsJade Lovelace
Change-Id: I254b793b42f77ffe9f357f3b376683e5758f23b5
2024-05-03Revert "Revert "Merge pull request #6621 from Kha/nested-follows""Maximilian Bosch
This reverts commit a8b3d777fbdaf0b732f129e5be62cd2a1227674b. This undoes the revert of PR#6621, which allows nested `follows`, i.e. { inputs = { foo.url = "github:bar/foo"; foo.inputs.bar.inputs.nixpkgs = "nixpkgs"; }; } does the expected thing now. This is useful to avoid the 1000 instances of nixpkgs problem without having each flake in the dependency tree to expose all of its transitive dependencies for modification. This was in fact part of Nix before and the C++ changes applied w/o conflicts. However, it got reverted then because people didn't want to merge lazy-trees against it which was supposed to be merged soon back in October 2022. Fixes: https://git.lix.systems/lix-project/lix/issues/201 Change-Id: I5ddef914135b695717b2ef88862d57ced5e7aa3c
2024-04-10don't boost::to_few_args when an eval cached string type errorsQyriad
Change-Id: Id3cb762622e156ceaf9d5bb95c2c704ffe474d0e
2024-04-09Print top-level errors normally in `nix repl`Rebecca Turner
Previously, errors while printing values in `nix repl` would be printed in `«error: ...»` brackets rather than displayed normally: ``` nix-repl> legacyPackages.aarch64-darwin.pythonPackages.APScheduler «error: Package ‘python-2.7.18.7’ in /nix/store/6s0m1qc31zw3l3kq0q4wd5cp3lqpkq0q-source/pkgs/development/interpreters/python/cpython/2.7/default.nix:335 is marked as insecure, refusing to evaluate.» ``` Now, errors will be displayed normally if they're emitted at the top-level of an expression: ``` nix-repl> legacyPackages.aarch64-darwin.pythonPackages.APScheduler error: … in the condition of the assert statement at /nix/store/6s0m1qc31zw3l3kq0q4wd5cp3lqpkq0q-source/lib/customisation.nix:268:17: 267| in commonAttrs // { 268| drvPath = assert condition; drv.drvPath; | ^ 269| outPath = assert condition; drv.outPath; … in the left operand of the OR (||) operator at /nix/store/6s0m1qc31zw3l3kq0q4wd5cp3lqpkq0q-source/pkgs/development/interpreters/python/passthrufun.nix:28:45: 27| if lib.isDerivation value then 28| lib.extendDerivation (valid value || throw "${name} should use `buildPythonPackage` or `toPythonModule` if it is to be part of the Python packages set.") {} value | ^ 29| else (stack trace truncated; use '--show-trace' to show the full trace) error: Package ‘python-2.7.18.7’ in /nix/store/6s0m1qc31zw3l3kq0q4wd5cp3lqpkq0q-source/pkgs/development/interpreters/python/cpython/2.7/default.nix:335 is marked as insecure, refusing to evaluate. ``` Errors emitted in nested structures (like e.g. when printing `nixpkgs`) will still be printed in brackets. Change-Id: I25aeddf08c017582718cb9772a677bf51b9fc2ad
2024-04-09Merge "Add `repl-overlays`" into mainrebecca “wiggles” turner
2024-04-08Add `repl-overlays`Rebecca Turner
Adds a `repl-overlays` option, which specifies files that can overlay and modify the top-level bindings in `nix repl`. For example, with the following contents in `~/.config/nix/repl.nix`: info: final: prev: let optionalAttrs = predicate: attrs: if predicate then attrs else {}; in optionalAttrs (prev ? legacyPackages && prev.legacyPackages ? ${info.currentSystem}) { pkgs = prev.legacyPackages.${info.currentSystem}; } We can run `nix repl` and use `pkgs` to refer to `legacyPackages.${currentSystem}`: $ nix repl --repl-overlays ~/.config/nix/repl.nix nixpkgs Lix 2.90.0 Type :? for help. Loading installable 'flake:nixpkgs#'... Added 5 variables. Loading 'repl-overlays'... Added 6 variables. nix-repl> pkgs.bash «derivation /nix/store/g08b5vkwwh0j8ic9rkmd8mpj878rk62z-bash-5.2p26.drv» Change-Id: Ic12e0f2f210b2f46e920c33088dfe1083f42391a
2024-04-08pragma once and ///@file everything missing itJade Lovelace
Change-Id: Ia1a72348336794b5fb9f2694dd750266089b904e
2024-04-08Format Nix code with `nixfmt`Rebecca Turner
Change-Id: I61efeb666ff7481c05fcb247168290e86a250151
2024-04-06avoid markdown which the repl's :doc cannot handlestuebinm
code blocks, if not surrounded by empty lines, have the language tags (in these cases, always `nix`) show up in the output of :doc. for example: nix-repl> :doc builtins.parseFlakeRef Synopsis: builtins.parseFlakeRef flake-ref Parse a flake reference, and return its exploded form. For example: nix builtins.parseFlakeRef "github:NixOS/nixpkgs/23.05?dir=lib" evaluates to: nix { dir = "lib"; owner = "NixOS"; ref = "23.05"; repo = "nixpkgs"; type = "github"; } is now instead: nix-repl> :doc builtins.parseFlakeRef Synopsis: builtins.parseFlakeRef flake-ref Parse a flake reference, and return its exploded form. For example: | builtins.parseFlakeRef "github:NixOS/nixpkgs/23.05?dir=lib" evaluates to: | { dir = "lib"; owner = "NixOS"; ref = "23.05"; repo = "nixpkgs"; type = "github"; } (closes #225) Change-Id: I0741aeb1006a5376bb2f663d202c7a4da7e38cce
2024-04-06always re-eval cached failuresQyriad
This is terrible UX, and frankly an eval failure should be a cache invalidation anyway. This removes the CachedEvalError type entirely. Fixes #223. Change-Id: I91f8003eabd0ea45003024e96d1de3c7ae8e49d8
2024-04-03Add `EscapeStringOptions` and `escapeString` testsRebecca Turner
Change-Id: I86ead2f969c9e03c9edfa51bbc92ee06393fd7d6
2024-04-01libexpr/flake: don't purple the flake.lock diffK900
Change-Id: I6f9471fb0ddd51fadb209ad970abd215238ba5c4
2024-03-31Merge pull request #9920 from 9999years/forbid-nested-debuggersThéophane Hufschmitt
Forbid nested debuggers (cherry picked from commit e164b39ee90fd655dbb7f479fdd4fbe38cc883bd) Change-Id: Iff62f40fd251116516a63e2d3f9fb5b21480b16d
2024-03-29Add `pre-commit` checksRebecca Turner
The big ones here are `trim-trailing-whitespace` and `end-of-file-fixer` (which makes sure that every file ends with exactly one newline character). Change-Id: Idca73b640883188f068f9903e013cf0d82aa1123
2024-03-30Merge "Document ExprLambda fields" into mainjade
2024-03-29Document ExprLambda fieldsJade Lovelace
We got confused what formals did and had to briefly figure it out. We should just have docs, so these are some. Change-Id: If3e794a401e69d022785cbfa0b0c2e2284f41f58
2024-03-29Move `escapeString` to its own fileRebecca Turner
Change-Id: Ie5c954ec73c46c9d3c679ef99a83a29cc7a08352
2024-03-29meson: add missing explicit dependency on nlohmann_jsonWinter
Without this, the Meson setup won't bail out if nlohmann_json is missing, leading to subpar DX (and maybe worse, but I'm not entirely sure). Change-Id: I5913111060226b540dcf003257c99a08e84da0de
2024-03-29meson: install missing/generated headerseldritch horrors
one headers (args/root.hh) was simply missing, and the generated headers were not installed. not all of them *should* be installed either, only a select few (and sadly this needs a custom target for each one, it seems) Change-Id: I37b25517895d0e5e521abc1202fa65624de57ed1
2024-03-29meson: install pkg-config files for librarieseldritch horrors
Change-Id: I14b9d81d09f188eacfb9c68bcfb84751c18e3779
2024-03-29Merge "Remove `HintFmt::operator%`" into mainwiggles dog
2024-03-27Stop vendoring toml11Winter
We don't apply any patches to it, and vendoring it locks users into bugs (it hasn't been updated since its introduction in late 2021). Closes https://git.lix.systems/lix-project/lix/issues/164 Change-Id: Ied071c841fc30b0dfb575151afd1e7f66970fdb9
2024-03-27HOT SALE: 15% off your build times!Jade Lovelace
This was achieved by running maintainers/buildtime_report.sh on the build directory of a meson build, then asking "why the heck is json eating our build times", and strategically moving the json using bits out of widely included headers. It turns out that putting literally any metrics whatsoever into the build had immediate and predictable results. Results are 1382.5s frontend time -> 1175.4s frontend time, back end time approximately invariant. Related: https://git.lix.systems/lix-project/lix/issues/159 Change-Id: I7edea95c8536203325c8bb4dae5f32d727a21b2d
2024-03-26Remove `HintFmt::operator%`Rebecca Turner
Change-Id: Ibcf1a7848b4b18ec9b0807628ff229079ae7a0fe
2024-03-25Merge pull request #8817 from iFreilicht/flake-update-lock-overhaulThéophane Hufschmitt
Overhaul `nix flake update` and `nix flake lock` UX (cherry picked from commit 12a0ae73dbb37becefa5a442eb4532ff0de9ce65) Change-Id: Iff3b4f4235ebb1948ec612036b39ab29e4ca22b2
2024-03-25Minor cleanup in libexpr/flake/flake.ccEelco Dolstra
(cherry picked from commit 05316d401fa509557c71140e17bb19814412fcb8) Change-Id: I6ba0b55709f5fe21beb4e9f3bf72ee28715d15f3
2024-03-25Input: Replace markFileChanged() by putFile()Eelco Dolstra
Committing a lock file using markFileChanged() required the input to be writable by the caller in the local filesystem (using the path returned by getSourcePath()). putFile() abstracts over this. (cherry picked from commit 95d657c8b3ae4282e24628ba7426edb90c8f3942) Change-Id: Ie081c5d9eb4e923b229191c5e23ece85145557ff
2024-03-22build: optionally build and install with mesonQyriad
This commit adds several meson.build, which successfully build and install Lix executables, libraries, and headers. Meson does not yet build docs, Perl bindings, or run tests, which will be added in following commits. As such, this commit does not remove the existing build system, or make it the default, and also as such, this commit has several FIXMEs and TODOs as notes for what should be done before the existing autoconf + make buildsystem can be removed and Meson made the default. This commit does not modify any source files. A Meson-enabled build is also added as a Hydra job, and to `nix flake check`. Change-Id: I667c8685b13b7bab91e281053f807a11616ae3d4
2024-03-20libexpr: unbreak PosTable performanceeldritch horrors
this was mostly an inconvenience for error reporting, but fully broke the debugger (because the debugger does *a lot* of eager position resolution). copying the line offsets into a local and filling that local when empty without also storing the calculated offsets back does kind of ... not cache anything. fixes https://git.lix.systems/lix-project/lix/issues/165 Change-Id: Iccb0ba193ce2f15c832978daecf7b9bebbbe8585
2024-03-18Merge changes I72c945ca,I2138bb4d,Ib96749f3 into mainjade
* changes: Release notes for builtins.nixVersion change un-nixes ur lix, a little issue importer: list issues that are *not* closed when finding existing issues
2024-03-18un-nixes ur lix, a littleJade Lovelace
I didn't really go attack the docs because we need to pull a bunch of PRs. I went looking for strings in the code that called lix nix. Change-Id: I2138bb4dd239096bc530946b281db7f875195b39
2024-03-18libexpr: associate let exprs with the correct StaticEnveldritch horrors
static env association is from expr to its enclosing scope, but let exprs set their association to their *inner* scope. this skips one level of envs and will cause segfaults if the parent is a with expr. fixes #145 Change-Id: I1d22146110f071ede21b4eed7ed34b5850ef2ef3
2024-03-18libexpr: sort binding name in debuggereldritch horrors
not doing this exposes the binding name order to the annoying interference of parse order on symbol order, which wouldn't be so bad if it didn't make the tests less reliable and, importantly, dependent on linker behavior (due to primop initialization being done in static initializer, and the order of static initializers being defined only within a single translation unit). fixes #143 Change-Id: I3cf417893fbcf19e9ad3ff8986deb7cbcf3ca511
2024-03-18Merge "Delete hasPrefix and hasSuffix from the codebase" into mainjade
2024-03-18use byte indexed locations for PosIdxeldritch horrors
we now keep not a table of all positions, but a table of all origins and their sizes. position indices are now direct pointers into the virtual concatenation of all parsed contents. this slightly reduces memory usage and time spent in the parser, at the cost of not being able to report positions if the total input size exceeds 4GiB. this limit is not unique to nix though, rustc and clang also limit their input to 4GiB (although at least clang refuses to process inputs that are larger, we will not). this new 4GiB limit probably will not cause any problems for quite a while, all of nixpkgs together is less than 100MiB in size and already needs over 700MiB of memory and multiple seconds just to parse. 4GiB worth of input will easily take multiple minutes and over 30GiB of memory without even evaluating anything. if problems *do* arise we can probably recover the old table-based system by adding some tracking to Pos::Origin (or increasing the size of PosIdx outright), but for time being this looks like more complexity than it's worth. since we now need to read the entire input again to determine the line/column of a position we'll make unsafeGetAttrPos slightly lazy: mostly the set it returns is only used to determine the file of origin of an attribute, not its exact location. the thunks do not add measurable runtime overhead. notably this change is necessary to allow changing the parser since apparently nothing supports nix's very idiosyncratic line ending choice of "anything goes", making it very hard to calculate line/column positions in the parser (while byte offsets are very easy). (cherry picked from commit 5d9fdab3de0ee17c71369ad05806b9ea06dfceda) Change-Id: Ie0b2430cb120c09097afa8c0101884d94f4bbf34
2024-03-18diagnose "unexpected EOF" at EOFeldritch horrors
this needs a string comparison because there seems to be no other way to get that information out of bison. usually the location info is going to be correct (pointing at a bad token), but since EOF isn't a token as such it'll be wrong in that this case. this hasn't shown up much so far because a single line ending *is* a token, so any file formatted in the usual manner (ie, ending in a line ending) would have its EOF position reported correctly. (cherry picked from commit 855fd5a1bb781e4f722c1d757ba43e866d370132) Change-Id: I120c56a962f4286b1ae3b71da7b71ce8ec3e0535
2024-03-18report inherit attr errors at the duplicate nameeldritch horrors
previously we reported the error at the beginning of the binding block (for plain inherits) or the beginning of the attr list (for inherit-from), effectively hiding where exactly the error happened. this also carries over to runtime positions of attributes in sets as reported by unsafeGetAttrPos. we're not worried about this changing observable eval behavior because it *is* marked unsafe, and the new behavior is much more useful. (cherry picked from commit 1edd6fada53553b89847ac3981ac28025857ca02) Change-Id: I2f50eb9f3dc3977db4eb3e3da96f1cb37ccd5174
2024-03-18normalize formal order on ExprLambda::showeldritch horrors
we already normalize attr order to lexicographic, doing the same for formals makes sense. doubly so because the order of formals would otherwise depend on the context of the expression, which is not quite as useful as one might expect. (cherry picked from commit 4147ecfb1c51f3fe3b4adcbd4e753fd487dab645) Change-Id: I3fd0dbdef3ac7447a3a03ff20bb514a0d0f23fb1
2024-03-18keep copies of parser inputs that are in-memory onlyeldritch horrors
the parser modifies its inputs, which means that sharing them between the error context reporting system and the parser itself can confuse the reporting system. usually this led to early truncation of error context reports which, while not dangerous, can be quite confusing. (cherry picked from commit d384ecd553aa997270b79ee98d02f7cf7e1849e6) Change-Id: I677646b5675b12b2faa787943646aa36dc6e6ee3
2024-03-17Delete hasPrefix and hasSuffix from the codebaseJade Lovelace
These now have equivalents in the standard lib in C++20. This change was performed with a custom clang-tidy check which I will submit later. Executed like so: ninja -C build && run-clang-tidy -checks='-*,nix-*' -load=build/libnix-clang-tidy.so -p .. -fix ../tests | tee -a clang-tidy-result Change-Id: I62679e315ff9e7ce72a40b91b79c3e9fc01b27e9
2024-03-17builtins.nixVersion: return fixed fake versionJade Lovelace
This builtin is only going to cause us problems because we are not Nix, so let's just falsify being in the 2.18 series, since that is the closest target that has any meaning. In future we might want to have a better feature detection mechanism, for when we actually add stuff to some builtin's attr set argument. But builtins.nixVersion is just going to be hopelessly broken and it should be stubbed out. Fixes https://git.lix.systems/lix-project/lix/issues/144 Change-Id: Id7390b32a29c6147f2977737d81846320de5d67e
2024-03-16diagnose duplicated attrs at correct patheldritch horrors
diagnose attr duplication at the path the duplication was detected, not at the path the current attribute wanted to place. doing the latter is only correct if a leaf attribute was duplicated, not if an attrpath was set to a non-attrset in one binding and a (potentially implied) attrset in another binding. fixes #124 Change-Id: Ic4aa9cc12a9874d4e7897c6f64408f10aa36fc82