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Given a path (which points to a directory and a list of paths which
are below that path, build a “sparse” version of that directory, so
that it only contains the listed paths (and their children):
$ nix-build -E 'with import ./. {}; nix.sparseTree ./. [
./default.nix
./nix/readTree
./nix/buildLisp
./third_party/nixpkgs
./third_party/overlays
]'
/nix/store/0ynj0gc613fs6mfp9snqcvdj5gfxbdzg-sparse-depot
$ lr -t 'type == d' result/
result/
result/nix
result/nix/buildLisp
result/nix/buildLisp/example
result/nix/readTree
result/nix/readTree/tests
[…]
result/third_party
result/third_party/nixpkgs
result/third_party/overlays
result/third_party/overlays/haskell
result/third_party/overlays/haskell/patches
result/third_party/overlays/patches
This is useful if a derivation depends on depot.path (e. g. if it wants
to import depot at runtime). Usually this means that on every depot
commit (or even worse, every change of .git on a local machine), this
derivation has to be rebuild. By using sparseTree you can instead depend
on a stripped down version of depot which only contains the bits you
actually depend on, avoiding unrelated rebuilds.
Change-Id: I127b108c8b177c657fb46786d0a6256516fd2c52
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3503
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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This gives a slightly prettier error message and won't leak the error
message when builtins.tryEval is used. Currently an error message from
the tests is always part of the pipeline evaluation log.
Change-Id: I9b488a440368091ed42d707ba4124f592a64bd86
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3502
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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This makes it possible to override Nix builtins within a readTree
structure. Why would you want to do that, you might ask? Well ...
Change-Id: Icc9cb32e5db4a2eba370cf81769c642d237d4937
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3499
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Instead of having a mix of depot-passed args (for the filter) and args
to the readTree function itself, make everything a single attribute
set of arguments passed to the function.
This also makes it a bit easier to extend this in the future.
Change-Id: I633c1fc96026d137b451bb604ef92be32571a0f5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3498
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
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Rather than copying the depot path into the store on each commit,
assume bufCheck is run in the depot checkout (which it is, in
Buildkite land).
Change-Id: I4a4af2e5b45acad2d18218e503880ee63b20f078
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3462
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Adds another argument to readTree itself which can be passed when
importing readTree (e.g. in our default.nix) to filter the arguments
passed to a target based on that target's location in the tree.
This is intentionally not yet mentioned in the docs, and also
intentionally implemented in such a way that the API surface of
readTree doesn't change. The reason for this is that I want to figure
out whether these filter functions are actually useful, e.g. within
depot by filtering user-folder passing, and then refactor the readTree
API to find a public way of exposing this as part of the readTree
function itself (and not its import).
Relates to b/143.
Change-Id: I2cdf09f67916527d2337f4bfb578749aeac51a6a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3433
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
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Change-Id: I54294da08ee08bcf6cba6c792a2a2235b988a778
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3422
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Make "Example" the second section again since it got a bit buried under
a lot of detailed documentation you won't necessarily need right away.
Change-Id: I481354d1761c590e5872dfce8c3cf9934e278673
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3421
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
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CCL and SBCL create executables by dumping their image. As a
consequence, some part of the respective compiler is embedded in the
resulting executable which is executed and loads the image. For CCL and
SBCL this piece of software seems to unconditionally parse arguments
which can't be prevented since it happens before any lisp is loaded.
Luckily in both cases the parsing stops at `--`, so we can just pass
this via the wrapper — we just need to work around the problem that this
will of course be left in argv and confuse any later code. This can be
rectified by deleting everything prior to the first `--` in the global
argument list on startup in both cases.
In cases we do want to pass arguments to the image loader, we can use
the special NIX_BUILDLISP_LISP_ARGS environment variable which is
understood by the wrapper.
Note: This fix doesn't interfere with ECL since it is not using the
wrapper script at the moment.
Fixes b/136.
Change-Id: I3f95aa61e945e51428021ca18232ff15c923f870
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3357
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: grfn <grfn@gws.fyi>
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Doing this in a separate CL to avoid having to track the intermediate
changes no one will ever see in documentation as well which would be
unnecessary effort.
* Multi-implementation support introduced in cl/3292 and refined in
cl/3368 in terms of the user interface.
* Implementation specific srcs and deps introduced in cl/3321
* Implementation passthru attrs and rename from .sbcl -> .repl was done
in cl/3359
* ECL added in cl/3297, CCL in cl/3350
Change-Id: Ia13f2aea4e7e091c00991fcbfc601de364413979
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3380
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Instead of using a string to refer to an internal set defined in
buildLisp, we just expose the relevant sets (as nix.buildLisp.sbcl,
nix.buildLisp.ecl, …) and receive them as the `implementation`
argument directly. This has several advantages:
* It becomes easier to extend buildLisp, even for downstream users:
Since you can just pass your own set, there's nothing stopping you
from adding support for another implementation in a downstream
derivation without having to edit the buildLisp file in any way which
is great if you're using e. g. builtins.fetchGit to import it.
* Users can mess with the implementation set by changing out some parts
of it for customization purposes. Note that currently the sets use a
lot of self-references which aren't even bound by a fix-point, so to
make this work smoothly, we'd need to add some overriding mechanism.
* The buildLisp code becomes quite a bit clearer. Since we're now always
dealing with the implementation set, the confusing distinction between
`impl`, `impl.name` and `implementation` no longer exists. `impl` is
now exclusively an abbreviation of `implementation` (we could make
this more consistent in the future even).
Change-Id: I36d68069dd1315610b2f7159941507b465469b7c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3368
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
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This adds support for Clozure's CL implementation to buildLisp. This is
quite trivial in comparison to ECL since SBCL and CCL have very similar
in how they work (so much so that CCL also suffers from b/136).
Also the similarities in the code actually added here are striking, so
I'll try to make an effort to reduce the code duplication in the
future.
To fix builds with CCL the following changes were made:
* //3p/lisp/nibbles: The double inclusion of the types.lisp file was
fixed. CCL doesn't like double definitions and refuses to compile
otherwise.
* //3p/lisp/physical-quantities: Update to a new bug fix release which
contains a compilation fix for CCL.
* //3p/lisp/routes: apply a patch fixing the build which was previously
failing due to a double definition.
* //3p/lisp/usocket: only depend on sb-bsd-sockets for SBCL and ECL, the
latter of which seems to have a SBCL compatible implementation of the
package.
* Conditionally include a few CCL-specific source files and add
`badImplementation` entries for the remaining failures which are
//fun/gemma (to be expected) and //web/panettone which fails with an
incredibly vague message.
Change-Id: I666efdc39a0f16ee1bb6e23225784c709b04e740
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3350
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Adds ECL as a second supported implementation, specifically a statically
linked ECL. This is interesting because we can create statically linked
binaries, but has a few drawbacks which doesn't make it generally
useful:
* Loading things is very slow: The statically linked ECL only has byte
compilation available, so when we do load things or use the REPL it is
significantly worse than with e. g. SBCL.
* We can't load shared objects via the FFI since ECL's dffi is not
available when linked statically. This means that as it stands, we
can't build a statically linked //web/panettone for example.
Since ECL is quite slow anyways, I think these drawbacks are worth it
since the biggest reason for using ECL would be to get a statically
linked binary. If we change our minds, it shouldn't be too hard to
provide ecl-static and ecl-dynamic as separate implementations.
ECL is LGPL and some libraries it uses as part of its runtime are as
well. I've outlined in the ecl-static overlay why this should be of no
concern in the context of depot even though we are statically linking.
Currently everything is building except projects that are using cffi to
load shared libaries which have gotten an appropriate
`badImplementations` entry. To get the rest building the following
changes were made:
* Anywhere a dependency on UIOP is expressed as `bundled "uiop"` we now
use `bundled "asdf"` for all implementations except SBCL. From my
testing, SBCL seems to be the only implementation to support using
`(require 'uiop)` to only load the UIOP package. Where both a
dependency on ASDF and UIOP exists, we just delete the UIOP one.
`(require 'asdf)` always causes UIOP to be available.
* Where appropriate only conditionally compile SBCL-specific code and
if any build the corresponding files for ECL.
* //lisp/klatre: Use the standard condition parse-error for all
implementations except SBCL in try-parse-integer.
* //3p/lisp/ironclad: disable SBCL assembly optimization hack for all
other platforms as it may interfere with compilation.
* //3p/lisp/trivial-mimes: prevent call to asdf function by substituting
it out of the source since it always errors out in ECL and we hardcode
the correct path elsewhere anyways.
As it stands ECL still suffers from a very weird problem which happens
when compiling postmodern and moptilities:
https://gitlab.com/embeddable-common-lisp/ecl/-/issues/651
Change-Id: I0285924f92ac154126b4c42145073c3fb33702ed
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3297
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: eta <tvl@eta.st>
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For every implementation we support an extra passthru attribute with the
name of the implementation is created which points to a version of the
derivation built with that implementation. E. g. if we support CCL, ECL
and SBCL, third_party.lisp.alexandria would have:
* third_party.lisp.alexandria.sbcl
* third_party.lisp.alexandria.ecl
* third_party.lisp.alexandria.ccl
To make this possible, the REPL derivation which was called `sbcl`
originally has been renamed to `repl`.
Since some things won't build with all implementations, we introduce a
brokenOn argument which influences the meta.targets list that is
created, but won't prevent the passthru attrs from being created to
ease debugging failures.
Change-Id: Icd6af345143593fac30ded10deabf31172e5d48a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3359
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Both the deps and srcs arguments may now have special “filter sets” in
the lists they receive as arguments. When building, buildLisp checks if
such sets either have a attribute named like the current implementation
or a "default" attribute. If yes, the set is replaced by the respective
attribute's value. If no, the set is removed from the list without
replacement.
This can be used to add elements for (a) specific implementation(s):
{ sbcl = buildLisp.bundled "sb-posix"; }
{ sbcl = ./sbcl/optional-sbcl.lisp; }
or to switch between files for different implementations:
# If a implementation case is missing and no default set present,
# no file will be added. Compilation will likely fail as a result.
{
ecl = ./tf-ecl.lisp;
ccl = ./tf-ccl.lisp;
sbcl = ./tf-sbcl.lisp;
}
or to account for special behavior for a certain implementation:
{
ccl = ./ccl-quirk-impl.lisp
default = ./ansi-impl.lisp;
}
Change-Id: I082c3701d1f5063b92100bf336a83425471c269d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3321
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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By implementing a bundled function for an implementation, we can use a
custom one for a specific implementation. This is useful for
implementations like ECL where a require will be compiled as an
instruction rather than importing all new symbols into a dump, so using
the underlying static or shared object directly would be beneficial.
overrideLisp for bundled libraries now only allows overriding the name
and implementation arguments.
Change-Id: I9036b29157e8daa4d86ff87d603b044373711dbf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3301
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Concept is roughly:
* receive extra argument `implementation` that refers to the name of an
implementation or rather an attribute in an internal attribute set
telling buildLisp how to do certain build steps.
* We assume an implementation can execute lisp files as scripts and that
we can implement the following main tasks in lisp:
- Building a library (`genCompileLisp`)
- Building an executable (`genDumpLisp`)
- Loading a library dynamically (`genLoadLisp`)
Based on that we can implement:
- Running a test suite (`genTestLisp`)
- A REPL preloaded with a libraries and their dependencies (`lispWith`)
Additional attributes for implementing these parts genericly are
added as needed (`faslExt` and `runScript`).
* `genCompileLisp` no longer prints a shell script which concatenates
the individual FASLs. Instead it does the step previously done by the
shell script itself. In essence `genCompileLisp` now writes a lisp
script which compiles and installs the library to build.
This will allow us extra freedom for different implementations, e. g.
for ECL we'll want to build a object file archive additionally to fasl
files in order to be able to link proper executables.
* `genLoadLisp` and `genTestLisp` are almost generic (the former just
sometimes would need to use different file extensions), but we
integrate them into the implementation “API” to facilitate minor
tweaks we need to do like the `fasc` extension for ECL's native FASL
files.
Change-Id: I1b8ccc0063159638ec7af534e9a6b5384e750193
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3292
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Another day, another import from derivation avoided by
builtins.unsafeDiscardStringContext!
Change-Id: I67274b1ba13ba980bb3346b22f2955c702aa3151
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3372
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: tazjin <mail@tazj.in>
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To be fair this hardly matters since SBCL is quite fast, but compiling
ironclad with ECL is quite the experience…
Change-Id: Ib89cc50e5d557acec51fdb085bcbdfc99736221e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3342
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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`makeOverriddable` doesn't work for bundled sbclWith as is because it
uses the `//` operator internally which doesn't work with the types
`bundled` and `sbclWith` accept as arguments (string and list
respectively).
What's more, `bundled` already uses `makeOverridable` and allows to
override the internal call to `library` via `overrideLisp`. For
`sbclWith` no such mechanism exists, but this seems to be no concern for
now: Using `overrideLisp` for this hasn't worked so far (and failed with
a _hideous_ evaluation error), so there doesn't seem to be any real
demand for this feature. Maybe a feature for another CL.
Change-Id: I0b2f34c00a2143cd66dd43a6b1b2880af997ee50
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3296
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Using passthru and appending the attributes via `//` have the same
effect with a subtle difference: In the latter case re-evaluating
the derivation when using the underlying `mkDerivation`'s
`overrideAttrs` will delete all appended attributes. Using
passthru at least preserves the attributes although the self
reference to the derivation in `passthru.sbcl` will become
outdated (unless updated manually).
Change-Id: I8b85009f386b9375b86a23fd50c4ec8c6a9dea7f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3257
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: grfn <grfn@gws.fyi>
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We can be closed world, so let’s restrict the arguments to the subset
we need for now.
The existing override was wrong, in that `// args` would use the
arguments we already added, again. So instead of deliberating about
how to make this work right in all cases, we don’t need it, we trim
it.
Change-Id: I6443a0808b8bfd5e4db939b669c6afc741954db8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3057
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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My horrible blog engine v0.0.0.0.1. Don’t judge.
Change-Id: I427b4e84d67aa49793cb7625e4d8ca2824f00943
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2456
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
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I think it’s solid enough to use in a wider context.
Change-Id: If53e8bbb6b90fa88d73fb42730db470e822ea182
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3055
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: lukegb <lukegb@tvl.fyi>
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Moving to toplevel so I can use them with `runExecline`. They should
be pretty atomic, and are proven to work (tests are still in my user
dir, since they test the producers indirectly via the python parser
and I don’t want to pull it out right now).
Change-Id: Id0baa3adcb2ec646458a104c7868c2889b8c64f5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3054
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
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When a foreign dep is missing a dependency, it is good to have a
context.
e.g. the `github.com/charmbracelet/bubblegum` package has a lot of
dependencies that are only used in its `examples/` dir; this is not
obvious, unless we also print where the imports come from.
New error message:
```
error: missing foreign dependency 'github.com/containerd/console' in 'github.com/charmbracelet/bubbletea, imported at /nix/store/0cry4sg6bzxqwk5zl2nxhas6k5663svg-source/tea.go:22:2'
```
Change-Id: If34a3c62b9d77d4aea108b5e011e16fbd03e8554
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2852
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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This is a wrapper around baseNameOf which also can deal with
derivations. Added to //nix/utils since I've found myself introducing an
ad-hoc implementation of this for both //web/bubblegum and //nix/buildC.
Change-Id: I2fcd97a150d6eda21ab323fa0d881ff7442a892e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3049
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Instead of having two ways of accessing the path to the depot (one of
which was stuttering, depot.depotPath) we settle on only one:
depot.path.
This was mostly used for NixOS module imports.
Co-Authored-By: Florian Klink <flokli@flokli.de>
Change-Id: I2c0db23383fc34f6ca76baaad4cc4af2d9dfae15
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2962
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
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Plumbs an additional internal argument through readTree that indicates
whether the top-level of a tree is being read, and avoids recursing
into itself in that case. This changes the externally visible
behaviour of readTree (it is now expected to be called a level higher
than previously).
This allows us to reduce the amount of boilerplate needed to bootstrap
the TVL repository (by not having to specify the individual folders
that need to be read).
For reasons related to an infinite recursion we could not (be bothered
to) debug, the top-level `config` key (which held the attribute set
passed on by readTree) has been removed. This is not needed, as it is
already passed on by readTree ...
Co-Authored-By: Florian Klink <flokli@flokli.de>
Change-Id: Id6e39b57b2f5b3473c4b695a72dd1d01fcfb7a66
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2961
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: grfn <grfn@gws.fyi>
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Change-Id: I9a6eafa7d4bb3d590dfa35d368adfd25aeed7f64
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2936
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
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This should ease migrating to a distinction between depot.third_party
and pkgs (as in nixpkgs) in the future.
Ref cl/2910, b/108.
Change-Id: I53a854071fddd7c0d0526cc4c5b16998202082c6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2913
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Very simple builder which builds (optionally) gzipped man pages from a
list of attrsets and links them into a common man directory with the
correct layout, so it should be installable immediately.
Additionally runs mandoc -T lint, but by default only for informational
purposes as it is very strict and some things are almost never true (for
example all Xrs being present in the respective directory).
buildManPages.single exposes the internal builder for a single,
optionally gzipped man page from a nix attrset.
Change-Id: I43fce011716f4a7cc80521f222800ca99ba54060
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2654
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Same as 221698c603dcb318c609b4d21cb2a9fada44a14c
We had a bunch of instances of
https://github.com/NixOS/nix/issues/2176,
where nix would exit with a “killed by signal 9” error.
According to Eelco in that issue, this is perfectly normal behaviour
of course, and appears if the last command in a loop closes `stdout`
or `stdin`, then the builder will SIGKILL it immediately. This is of
course also a perfectly fine error message for that case.
It turns out that mainly GNU coreutils exhibit this behaviour …
Let’s see if using a more sane tool suite fixes that.
Change-Id: Iaf9e542952ca36c02208a3f067f575ba978272b4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2663
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
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I'm looking at removing some of these because they can cause
unnecessary build steps during CI pipeline generation.
Change-Id: I84742968918090c050d2eedab8a1b42692632a42
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2655
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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Setting meta.targets to include all derivations in the different package
sets in Profpatsch's user folder makes them checked by CI until they do
the readTree refactor as promised.
To reduce code duplication we handle this in a simple function which is
exposed from nix.utils which may be a good place for depot specific bits
and bops we accumulate over time.
To get around the issue of too nested sets we perform the following
renames:
* users.Profpatsch.tests gets moved into its own directory
* users.Profpatsch.arglib.netencode now lives in its own file instead of
the default.nix
* users.Profpatsch.netstring.tests gets moved into its own directory
Change-Id: Icd039c29d7760a711c1c53554504d6b0cd19e120
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2603
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
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Go 1.16 makes "go list all" not work. "go list std" is what we should be
using instead anyway.
Change-Id: I3f867fde477030d2358085b3d64b5856fb9c421b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2551
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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When a file is added to the depot tree that is picked up by read-tree,
but it’s not a function like ({...}: {}), `readTree` will fail on the
function application, leading to a bad error message.
We can do slightly better, by checking the type and throwing a nicer
trace message.
`assertMsg` is copied from `nixpkgs/lib/assert.nix`, since at this
point we don’t have a reference to the lib.
There is another evaluation failure that can happen, which is when the
function we try to call does not have dots; however, nix does not
provide any inflection capabilies for checking whether a function
attrset is open (`builtins.functionArgs` only tells us the attrs it
mentions explicitly). Maybe the locality of the error could be
improved somehow.
Change-Id: Ibe38ce78bb56902075f7c31f2eeeb93485b34be3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2469
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Previously, for types defined using typedef (like all primitive types)
type.checkType would return a boolean. This is largely fine since in
most places `type.checkToBool (type.checkType x)` or similar is used.
However, some functions actually take type.checkType up on the promise
that it returns a set of the form:
{
ok = <bool>;
err = <option string>;
}
This is the case for restrict which has checkToBool = v: v.ok; and will
generate a proper set except if `t.checkToBool (t.checkType v) == false`
in which case it will return t.checkType v. If t was a primitive type or
defined using typedef, previously `t.checkType v` would be a boolean
which meant as soon as (restrict …).checkToBool was called on a restrict
checkType result in cases where the wrapped type didn't match, an
unrelated error would be thrown:
nix-repl> with nix.yants; restrict "foo" (_: true) int "lol"
error: value is a boolean while a set was expected, at /home/lukas/src/depot/nix/yants/default.nix:38:39
This is fixed by making typedef return a proper set from checkType and
adjusting its checkToBool accordingly.
Unfortunately I don't think we can easily add test cases for this except
by using recursive nix or VM tests as there is no way to introspect
error messages.
Change-Id: I96a7be065630f04ca33358f21809284911ec14fe
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2536
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: Profpatsch <mail@profpatsch.de>
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Nix unfortunately has terrible escaping syntax: If something is an
escape sequence it does not know, like \0, it just swallows the
backslash and returns the second character (byte) as is (yes,
"\0" == "0" is true). This created the following bug in nixFileName
which should have resulted in at least a parse error: "(.*)\.nix" is
the same as "(.*).nix" which meant that nixFileName matched anything
that is at least 4 characters long and ends in "nix". This lead to
readTree creating double attributes when directories are involved or
attributes for non-nix files.
Change-Id: Ibf3be2bd189d48881c82ee795c50151bfb365627
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2535
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
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This adds the star of NixCon 2017 from vuizvui, slightly reformatted and
now using yants. While it has some flaws, I realized that it is ideal to
run the tests of rustSimple{Lib,Bin} where the normal and the -tests
variant would have to be rebuilt if either the tests or the library /
executable itself changes.
Change-Id: Ie8f84f98c51c9fafc046eff916c8f0df7e8f224b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2528
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
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By using an extremely trivial derivation we can ensure that it will not
throw if evaluated using deepSeq. When using stdenv.mkDerivation or
similar at some point something will most likely throw or generate some
kind of error which is alright in the context of nixpkgs, but makes
testing yants harder than you'd think it should be.
Change-Id: I61ff7dc01a00a4815ef39066e4e223123356ddd5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2507
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
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Port existing tests to runTestsuite and add some obvious additional
tests that wouldn't be possible before (using assertThrows and
assertEq).
Change-Id: Ibe950a7a0cda3e23ebb226bdff35f52cdfec5ddf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2479
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Reviewed-by: tazjin <mail@tazj.in>
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assertDoesNotThrow is like assertThrows, but fails if the expression
throws. In that case the new unexpected-throw branch of AssertErrorContext
is returned.
Change-Id: I7195eb5df8965456e9ab9b69e35ec96b33f00a35
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2476
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
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Refactor assertEq and assertThrows to be implemented in terms of a more
generic assertBool to reduce code duplication and ease adding new assert
types.
To preserve meaningful error messages AssertResult is changed slightly:
nope-eq and nope-throw have been replaced by a single nope branch which
contains an AssertErrorContext which contains error information. To
implement an assert assertBoolContext (which is not exposed) can be
used: It takes an AssertErrorContext which is returned in case of an
error and a boolean determining whether the assert was successful.
The currently possible AssertErrorContext are:
* should-throw: error result of assertThrows, formerly nope-throw
* not-equal: error result of assertEq, formerly nope-eq
Change-Id: Ifd6b3aa4187c90c3add2df63fa7c906c8f03fd2d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2473
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
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Introduces the concept of a “tag”, a single-keyed attrset which
annotates a nix value with a name.
This can be used to implement tagged unions (by implying the list of
possible tags is well-known), which has some overlap with how
`nix.yants` does it.
However, the more fascinating use-case is in concert with a
so-called discriminator, `match` and hylomorphisms.
The discriminator can take a nix value, and add tags to it based on
some predicate.
With `match`, we can then use that information to convert the
discriminated values again.
With `hylo`, we can combine both the “constructive” discriminator step
with the “destructive” match step to recursively walk over a nix data
structure (based on a description of how to recurse, e.g. through attrset
values or list values), and then apply a transformation in one go.
Change-Id: Ia335ca8b0881447fbbcb6bcd80f49feb835f1715
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2434
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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This should closely match the documented behaviour. It might still be
missing some edge cases of course.
Change-Id: I5c75fa045d5f3be8cf5eab787a02644500c14522
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2466
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
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First step to slowly giving readTree some coverage, so we can do
refactoring without breaking functionality.
Change-Id: If25a8c0fa9c4ac7472c0473372f10a9326cccaf7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2465
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
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We are going to export some tests under `nix.readTree.tests`, so in
order to do that and still have `nix.readTree` be a function, let’s
move it to `__functor`.
This requires wiring the `args` and `initPath` arguments through
explicitly.
Change-Id: Ife7956b85d35e59c22174b42dcb7cca83ed868ea
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2464
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
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Uses `builtins.tryEval` to check that the expression throws when
`deepSeq`-ed.
Change-Id: I0d57cc37f473bb733f57a1b1c0d889084152fd2f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2463
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
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Previously we would throw or return `{}`, which doesn’t integrate
nicely into our CI; thus, let’s wrap it into a derivation which either
fails the build or doesn’t.
Change-Id: I65880d86b8393094661e57a0b32aafe748bf1dd5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2462
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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