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2024-04-10Merge "Print top-level errors normally in `nix repl`" into mainrebecca “wiggles” turner
2024-04-10docs: generalize manpage generation script as json-to-tree.pyQyriad
This should be capable of replacing every invocation of nix eval --write-to. Change-Id: I60387bc9b0fc54a91244eddb639beaa64d705878
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
2024-04-09docs: put the manual build into a known tmpdireldritch horrors
this isn't strictly necessary, but it'll make it a lot easier to put the generated files used by the autoconf build system in this directory too. doing this now already will make the meson transition a lot easier later Change-Id: I5fb39eade2ff88b6093c9ee436c9e8db793e9448
2024-04-09docs: don't compute SUMMARY.md during buildeldritch horrors
this would make meson build compatibility unnecessarily hard and the cli does not change often enough to justify this complexity. Change-Id: I17b1870cdf8538feeaa01a9945db97af2175a642
2024-04-09docs: don't compute rl-next.md during buildeldritch horrors
not sure why this was done the way it was considering that includes are a feature the doc toolchain had previously. let's just always have some kind of entry for the upcoming release in the dev manual builds even if that means having a completely empty release notes chapter. the release notes generation script isn't entirely functional right now due to pre-commit hooks, but it's good enough for time being. we need a better release process for notes anyway. Change-Id: Ifda6912cf5233db013f72a30247a62d6f22b1565 Change-Id: I9eb347ec4aabc5be2b816ff0fd3e4be45f93b934
2024-04-09docs: skip do custom include processing for mdbookeldritch horrors
mdbook already does include processing of its own, and the custom processing code has always admitted as much. we don't need it for the mdbook build at this point if we run our preprocessors in the right order, and maybe we can even have mdbook to return complete pages to us that we only have to pass to lowdown without any more preprocessing of our own. Change-Id: Icd978acbc3b1e215fee8f062c53ab2cb2a222ab1
2024-04-09docs: remove many link-to-selfeldritch horrors
for some reason these three were anchors, not links, but had they been links they wouldn't've worked because they're not defined anywhere but here. in the print version of the manual they're duplicated many times over (creating id collisions), so we should better remove them anyway. Change-Id: I8988a7c32c812dee0f0b6d4953faa7cd1255228d
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
2024-04-08build: enable libstdc++ assertionsJade Lovelace
Benchmarks say that it does not regress performance by more than 1% (which is where it gets really hard to measure accurately anyhow). Meson appears to be planning to do this for us without asking us in a release we will get in the future, and it seems good enough to ship today: https://mesonbuild.com/Release-notes-for-1-4-0.html#ndebug-setting-now-controls-c-stdlib-assertions Benchmarks: | Command | Mean [ms] | Min [ms] | Max [ms] | Relative | |:---|---:|---:|---:|---:| | `result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix` | 418.4 ± 25.0 | 396.9 | 451.2 | 1.01 ± 0.08 | | `result/bin/nix --extra-experimental-features 'nix-command flakes' eval -f ../nixpkgs/pkgs/development/haskell-modules/hackage-packages.nix` | 416.1 ± 23.9 | 397.1 | 445.4 | 1.00 | | Command | Mean [s] | Min [s] | Max [s] | Relative | |:---|---:|---:|---:|---:| | `GC_INITIAL_HEAP_SIZE=10g result-asserts/bin/nix eval --extra-experimental-features 'nix-command flakes' --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'` | 4.147 ± 0.021 | 4.123 | 4.195 | 1.00 | | `GC_INITIAL_HEAP_SIZE=10g result/bin/nix eval --extra-experimental-features 'nix-command flakes' --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'` | 4.149 ± 0.027 | 4.126 | 4.215 | 1.00 ± 0.01 | | Command | Mean [s] | Min [s] | Max [s] | Relative | |:---|---:|---:|---:|---:| | `result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'` | 5.838 ± 0.023 | 5.799 | 5.867 | 1.01 ± 0.01 | | `result/bin/nix --extra-experimental-features 'nix-command flakes' eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system'` | 5.788 ± 0.044 | 5.715 | 5.876 | 1.00 | | Command | Mean [s] | Min [s] | Max [s] | Relative | |:---|---:|---:|---:|---:| | `result-asserts/bin/nix --extra-experimental-features 'nix-command flakes' search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870 hello` | 15.993 ± 0.081 | 15.829 | 16.096 | 1.01 ± 0.01 | | `result/bin/nix --extra-experimental-features 'nix-command flakes' search --no-eval-cache github:nixos/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870 hello` | 15.897 ± 0.075 | 15.807 | 16.047 | 1.00 | Fixes: https://git.lix.systems/lix-project/lix/issues/4 Change-Id: Id3a6f38274ba94d5d10b09edd19dfd96bc3e7d5f
2024-04-08Format Nix code with `nixfmt`Rebecca Turner
Change-Id: I61efeb666ff7481c05fcb247168290e86a250151
2024-04-06meson: fix warm nix3 CLI manual generationQyriad
`nix eval --write-to` refuses to write to a directory that exists at all, so now we generate in a temporary directory, and copy the generated tree to the build directory. This is equivalent to what the Make buildsystem did, actually, but hopefully more robust. Future work: documenting the doc generation architecture in the top-level meson.build outline comment. Change-Id: Ic3eb6d26e3cc249a1c042fd3ced22d637ac66a69
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
2024-04-04docs: replace sed invocation with an mdbook preprocessor for @docroot@Qyriad
We're not entirely clear on why the links preprocessor has to be done *before* rather than after, but we assume it is probably that as a builtin preprocessor it does some processing on the raw book source, and not just the JSON data. Also a real use for Python pattern matching? I know I was surprised too. Change-Id: Ibe8b59e7b5bd5f357a655d8b4c5f0b0f58a67d6b
2024-04-04Revert "meson: move nix3 manpage generation into command-ref/"Qyriad
This reverts commit 70954233743a233744787103d3211237a28ddbca. This seems to have broken running ninja on warm build directories, which is not what we want. Reverted until we figure out something better Change-Id: I9623ae078917e7c59a930bf8044a216501d4bb20
2024-04-03Merge "meson: move nix3 manpage generation into command-ref/" into mainQyriad
2024-04-03meson: move nix3 manpage generation into command-ref/Qyriad
This puts the generated files where they are for the make system. This is in preparation for further meson-mdbook stuff. Change-Id: I934df6854a80af5ccf381cf1da0bda0187a8bcfc
2024-04-03repl: improve `:doc` builtin repl command to support lambdas.Lunaphied
For a long time `nix repl` has supported displaying documentation set on builtins, however, it has long been convention to use Markdown comments on Nix functions themselves for documentation. This exposes that information to `nix repl` users in a nice and formatted way. NixOS/rfcs#145 doc-comments are primarily what this feature is intended to consume, however, support for lambda documentation in the repl is experimental. We do our best effort to support the RFC here. These changes are based on [the nix-doc library](https://github.com/lf-/nix-doc) and are licensed under the terms described in the relevant source files. Change-Id: Ic6fe947d39a22540705d890737e336c4720b0a22
2024-04-01doc: remove the -- unescaping hackeldritch horrors
lowdown has an option to disable this behavior. use it. Change-Id: I06d4201b7f528021ddb8e94ac6baff385402e080
2024-03-31Merge pull request #9920 from 9999years/forbid-nested-debuggersThéophane Hufschmitt
Forbid nested debuggers (cherry picked from commit e164b39ee90fd655dbb7f479fdd4fbe38cc883bd) Change-Id: Iff62f40fd251116516a63e2d3f9fb5b21480b16d
2024-03-30Merge "Add `pre-commit` checks" into mainrebecca “wiggles” turner
2024-03-30meson: build and install nix3 manpageseldritch horrors
this notably does *not* install the `nix3-manpages` manpage the old system generated, mostly because that page was empty and just a bug with a coat of documentation paint. Change-Id: I7a4248a72e7bb5e0cc925a6311a33b6b72589569
2024-03-30meson: add manpages for old cli and config fileseldritch horrors
Change-Id: I93384ec774d1945a649f6aaf7cd967c3fb7197f9
2024-03-30build: extract make "functions" into scriptseldritch horrors
we'll want to use these for the meson builds, and probably eventually rewrite them in something that isn't plain shell. diffoscope confirms that out/share and doc/share are equal before and after these changes Change-Id: I49aa418fc8615cad86d67328e08c28a7405ec952
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
2024-03-27Stop 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
2024-03-27Enable clang build timing analysisJade Lovelace
I didn't enable this by default for clang due to making the build time 10% worse or so. Unfortunate, but tbh devs for whom 10% of build time is not *that* bad should probably simply enable this. Change-Id: I8d1e5b6f3f76c649a4e2f115f534f7f97cee46e6
2024-03-27build: replace changelog-d with local scripteldritch horrors
hacking changelog-d to support not just github but also forgejo and gerrit is a lot more complicated than it's worth, even moreso since the entire thing can just as well be done with ~60 lines of python. this new script is also much cheaper to instantiate (being python), so having it enabled in all shells is far less of a hassle. we've also adjusted existing release notes that referenced a gerrit cl to auto-link to the cl in question, making the diff a bit bigger closes https://git.lix.systems/lix-project/lix/issues/176 Change-Id: I8ba7dd0070aad9ba4474401731215fcf5d9d2130
2024-03-27manual: fix release noteseldritch horrors
fix key spelling errors, type errors, things-should-not-be-comments errors Change-Id: I3ce12873aa78002bca686bd88404771895b05d30
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
2024-03-24Improve new CLI UX by supporting short `-E` flag for `--expr`Lunaphied
Change-Id: I55881c846da8416a92a14deedfa5bbbf09a122fb
2024-03-19Merge "un-ups your start" into mainjade
2024-03-18un-ups your startJade Lovelace
We do not need upstart, it is so thoroughly obsolete that we should not care about supporting it. Change-Id: Ie0ca084740845555fddffacc899cd129c9a4c1fe
2024-03-18Release notes for builtins.nixVersion changeJade Lovelace
Change-Id: I72c945cab464d26d73f5594ef0a4bb2184545da4
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
2024-03-16diagnose 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
2024-03-10evaluate inherit (from) exprs only once per directiveeldritch horrors
desugaring inherit-from to syntactic duplication of the source expr also duplicates side effects of the source expr (such as trace calls) and expensive computations (such as derivationStrict). (cherry picked from commit cefd0302b55b3360dbca59cfcb4bf6a750d6cdcf) Change-Id: Iff519f991adef2e51683ba2c552d37a3df7a179e
2024-03-09Merge pull request #9914 from 9999years/debugger-on-traceeldritch horrors
Enter debugger on `builtins.trace` with an option (cherry picked from commit 774e7ca5847ebc392eac2a124a8f12b24da4f65a) Change-Id: If01e2110b3a128e639b05143227e365227d149f1
2024-03-09Merge pull request #9928 from 9999years/error-messages-in-nix-repleldritch horrors
Improve error printing in `nix repl` (cherry picked from commit a8050d9b83052e4b5c52bf2d116381aedec3a93e) Change-Id: I588f92d1dd4c546c98788b71403cc034f5e7129a
2024-03-09Merge pull request #9917 from 9999years/enter-debugger-more-reliablyeldritch horrors
Enter debugger more reliably in `let` expressions and function calls (cherry picked from commit c4ed92fa6f836d3d8eb354a48c37a2f9eeecc3aa) Change-Id: I16d0cad7e898feecd2399723b92ba8df67222fb4
2024-03-09Merge pull request #9754 from 9999years/print-value-when-coercion-failseldritch horrors
Print the value in `error: cannot coerce` messages (cherry picked from commit 5b7bfd2d6b89d7dd5f54c1ca6c8072358d31a84e) === test taken from 6e8d5983143ae576e3f4b1d2954a5267f2943a49; it was added previously (and not backported because its pr was a mostly-revert), but it's useful to have around. Change-Id: Icbd14b55e3610ce7b774667bf14b82e6dc717982
2024-03-09Merge pull request #9753 from 9999years/print-value-on-type-erroreldritch horrors
Print the value in `value is X while a Y is expected` error (cherry picked from commit 5f72a97092da6af28a7d2b2a50d74e9d34fae7e1) Change-Id: Idb4bc903ae59a0f5b6fb3b1da4d47970fe0a6efe
2024-03-09Merge pull request #9755 from 9999years/printer-followupeldritch horrors
Printer followup (cherry picked from commit 51f524c629b778b75cb62a9e0c85bae655984abc) Change-Id: I29214cc86c5e846cbcfec382022293a70011b316
2024-03-09Unify and refactor value printingeldritch horrors
Previously, there were two mostly-identical value printers -- one in `libexpr/eval.cc` (which didn't force values) and one in `libcmd/repl.cc` (which did force values and also printed ANSI color codes). This PR unifies both of these printers into `print.cc` and provides a `PrintOptions` struct for controlling the output, which allows for toggling whether values are forced, whether repeated values are tracked, and whether ANSI color codes are displayed. Additionally, `PrintOptions` allows tuning the maximum number of attributes, list items, and bytes in a string that will be displayed; this makes it ideal for contexts where printing too much output (e.g. all of Nixpkgs) is distracting. (As requested by @roberth in https://github.com/NixOS/nix/pull/9554#issuecomment-1845095735) Please read the tests for example output. Future work: - It would be nice to provide this function as a builtin, perhaps `builtins.toStringDebug` -- a printing function that never fails would be useful when debugging Nix code. - It would be nice to support customizing `PrintOptions` members on the command line, e.g. `--option to-string-max-attrs 1000`. (cherry picked from commit 0fa08b451682fb3311fe58112ff05c4fe5bee3a4, ) === Restore ambiguous value printer for `nix-instantiate` The Nix team has requested that this output format remain unchanged. I've added a warning to the man page explaining that `nix-instantiate --eval` output will not parse correctly in many situations. (cherry picked from commit df84dd4d8dd3fd6381ac2ca3064432ab31a16b79) Change-Id: I7cca6b4b53cd0642f2d49af657d5676a8554c9f8
2024-03-07Merge changes I03bbff94,I778edad1,Iaa80073b,Ib1d58fe4 into maineldritch horrors
* changes: Add release notes Print how many checks are run Print derivation paths Log what `nix flake check` does
2024-03-07Add release noteseldritch horrors
(cherry picked from commit 561a56cd13b4f12e3dfb6c5e3f42e5d8add04ecc) === Modified the release notes' synopsis to make it match its contents, probably a copy-paste. Co-authored-by: Raito Bezarius <raito@lix.systems> Change-Id: I03bbff940b93e7df4b6c2fe9159c49a59ed47b55
2024-03-07Merge pull request #9032 from Ma27/structured-attrs-env-varseldritch horrors
structured attrs: improve support / usage of NIX_ATTRS_{SH,JSON}_FILE (cherry picked from commit 3c042f3b0b0a7ef9c47bf049f5410dbd4aac9e90) Change-Id: I7e41838338ee1edf31fff6f9e354c3db2bba6c0e
2024-03-05Merge pull request #5145 from fedepell/local_doc_build_5140eldritch horrors
Docs build: depend on locally built nix executable and not installed one (cherry picked from commit ca72e3e7e8f69526f028475a7a9b40812da1acdd) === includes changes from (because not doing so removes manpages): Merge pull request #9976 from alois31/restore-manual-pages Restore manual pages (cherry picked from commit d3c1997127e0fc08576e842b2bfe046d8a28d2f4) Change-Id: I685ff16163ac552a1754570c03c992c63a461d50