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15160 commits

Author SHA1 Message Date
jade ed95b02215 Implement a parser for a literate testing system for the repl
This parser can be reused for other purposes. It's inspired by
https://bitheap.org/cram/

Although eelco's impostor exists https://github.com/mobusoperandi/eelco,
it is not very nice to depend on out of tree testing frameworks with no
way to customize them.

Change-Id: Ifca50177e09730182baf0ebf829c3505bbb0274a
2024-03-13 15:46:55 -07:00
eldritch horrors 06952cf7c4 support <program>_ENV variables
this lets us set per-test-program environment variables rather than only
a single, global default. this was supported in nix originally but
might've gone partially missing in the upstream backports process?

Change-Id: Iad0919841b1b6d11e0b7ebd3920449a62f544e77
2024-03-13 19:48:26 +01:00
jade 1b8662b85c import the revisions to the characterization test framework from cppnix
This has some Flaws for sure (like, it is going to be a bit stretched to
use for repl characterization), but it is a start.

Change-Id: I258c8beb3aee236f45818a03be83bcda858120c9
2024-03-11 14:14:43 -07:00
jade be2b87ed4d add automated usage mode to the repl
This is definitely not a stable thing, but it does feel slightly crimes
to put it as an experimental feature. Shrug, up for bikeshedding.

Change-Id: I6ef176e3dee6fb1cac9c0a7a60d553a2c63ea728
2024-03-11 14:14:43 -07:00
jade b06a392114 Merge "refactor: repl prompts are now the job of the interacter" into main 2024-03-11 15:12:09 -06:00
jade dd05106d1c Merge "refactor: move readline stuff into its own file" into main 2024-03-11 15:11:56 -06:00
jade df2723b972 Merge "finally.hh: delete copy constructor which is a bad idea" into main 2024-03-11 15:11:20 -06:00
jade d9367da027 Merge "Add box_ptr: nonnull unique_ptr with value semantics" into main 2024-03-11 15:11:15 -06:00
Qyriad f9701da8f6 Merge changes from topic "maint/flake-package.nix" into main
* changes:
  package: cleanup of all intermediaries
  package: migrate devShells
  package: migrate internal-api-docs
  package: migrate testNixVersions
  package: use pname, version, and dontBuild (first change with diff hash)
  package: refactor Nix out of flake.nix and into package.nix
2024-03-11 14:32:37 -06:00
jade 50c401b4c1 Merge "util.hh: split out signals stuff" into main 2024-03-11 11:14:24 -06:00
Qyriad 36a8d151e1 package: cleanup of all intermediaries
Change-Id: I0da5182de6b01c192cfcba407959d659d70c6dc9
2024-03-11 04:26:35 -06:00
Qyriad 529a01ade2 package: migrate devShells
Change-Id: Ic63721667edd4bef79aa699a0de8411639e5159b
2024-03-11 04:26:35 -06:00
Qyriad b072c069b7 package: migrate internal-api-docs
Change-Id: I344d73a412c2c6e4bb2eb14bd4859056324f1ba7
2024-03-11 04:26:35 -06:00
Qyriad 4ad3446311 package: migrate testNixVersions
Change-Id: I71845f8a6d7b77c3617d055e726ed4a28cd05fa3
2024-03-11 04:26:35 -06:00
Qyriad 875b76d0c7 package: use pname, version, and dontBuild (first change with diff hash)
The src fileset, preConfigure, and separateDebugInfo also respond to doBuild if its overridden

This commit is logically just a continuation of the previous commit's
refactor, but exists separately to delineate when the core Nix
derivation hash changed (this commit).

Change-Id: I67a61bc9608d91b6a833ebc5c3894b2d2e694050
2024-03-11 04:26:35 -06:00
Qyriad 15380b4c6e package: refactor Nix out of flake.nix and into package.nix
This series takes a somewhat different approach from the flake rework
done in NixOS/nix. The package.nix here does not provide callPackage
options for all the various settings in the build, and instead the other
places Nix derivations are used (like internal-api-docs) will .overrideAttrs
the normal Nix package derivation. This more closely matches how these
things were structured originally, and results in less churn and more
atomicity in these changes.

In the future, package.nix likely will migrate to have more build
options in the callPackage arguments, but we are also planning to
rewrite the build system anyway.

Change-Id: I170c4e5a4184bab62e1fd75e56db876d4ff116cf
2024-03-11 04:26:35 -06:00
jade 1758a6ef25 refactor: repl prompts are now the job of the interacter
Change-Id: I17c2873dfbbff303cdbdc7a8903deb8409ce3026
2024-03-11 01:04:52 -07:00
jade 95a87f2c2a refactor: move readline stuff into its own file
This is in direct preparation for an automation mode of nix repl.

Change-Id: I26e6ca88ef1c48aab11a2d1e939ff769f1770caa
2024-03-11 01:04:52 -07:00
jade 45f6e3521a finally.hh: delete copy constructor which is a bad idea
Change-Id: I6d0b5736893c44bddc6f5789b452b434f8671b9b
2024-03-11 01:04:52 -07:00
jade af515baf6e Add box_ptr: nonnull unique_ptr with value semantics
This solves the problem of collections of boxed subclasses with virtual
dispatch, which should still be treated as values, since the
indirection is only there due to the virtual dispatch.

Change-Id: I368daedd3f31298e99c6e56a15606337a55494c6
2024-03-11 01:04:52 -07:00
jade 8be7030299 util.hh: split out signals stuff
Copies part of the changes of ac89bb064a

Change-Id: I9ce601875cd6d4db5eb1132d7835c5bab9f126d8
2024-03-11 00:52:09 -07:00
jade 6432bf9197 Merge "Print derivation paths in nix eval" into main 2024-03-10 16:12:32 -06:00
eldritch horrors 0a4737f519 add doc comment justifying ExprInheritFrom
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
(cherry picked from commit f24e445bc024cfd3c26be5f061280af549321c22)
Change-Id: I7acda5d5c34c0914a78adc2385d32782c4c275cd
2024-03-10 03:18:32 -06:00
eldritch horrors 06764118ea remove ExprAttrs::AttrDef::inherited
it's no longer widely used and has a rather confusing meaning now that
inherit-from is handled very differently.

(cherry picked from commit 1cd87b7042d14aae1fafa47b1c28db4c5bd20de7)
Change-Id: I90bbebddf06762960d8ca4f621cf042ce8ae83f9
2024-03-10 03:18:32 -06:00
eldritch horrors b667b4cded evaluate inherit (from) exprs only once per directive
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
2024-03-10 03:18:32 -06:00
eldritch horrors 71e0114708 remove getDerivations deduplication
deduplication does not currently work fully, showing derivations
multiple times if they have different underlying values. this can happen
by selecting the same derivation twice for two different attributes of a
set, using inherit-from (which reduces to the previous), importing
nixpkgs twice, or any other number of things.

since users already have to deal with duplicates for this reason it
won't hurt to add *more* duplicates. the alternative would be to
deduplicate fully, which would drop derivations that are currently
returned and those pose a regression risk.

Change-Id: I64b397351237e10375d270f1bddecb71f62aa131
2024-03-10 03:18:32 -06:00
eldritch horrors 2a84123631 group inherit by source during Expr::show
for plain inherits this is really just a stylistic choice, but for
inherit-from it actually fixes an exponential size increase problem
during expr printing (as may happen during assertion failure reporting,
on during duplicate attr detection in the parser)

(cherry picked from commit ecf8b12d60)
Change-Id: Ie55f0cb01a37e766414c31f8d40f51c2c7d106b0
2024-03-10 03:18:32 -06:00
eldritch horrors bf19eebb9b use the same bindings print for ExprAttrs and ExprLet
this also has the effect of sorting let bindings lexicographically
rather than by symbol creation order as was previously done, giving a
better canonicalization in the process.

(cherry picked from commit 6c08fba533)
Change-Id: Ia887f629305645bb8a165fbbc0d32e620912595a
2024-03-10 03:18:32 -06:00
eldritch horrors 1cf0fa0633 add ExprAttrs::AttrDef::chooseByKind
in place of inherited() — not quite useful yet since we don't
distinguish plain and inheritFrom attr kinds so far.

(cherry picked from commit 1f542adb3e)
Change-Id: If948c9d43e875de18f213a73a06a36f7c335b536
2024-03-10 03:18:32 -06:00
eldritch horrors 03f852b2c6 preserve information about whether/how an attribute was inherited
(cherry picked from commit c66ee57edc)
Change-Id: Ie8606a8b2f5946c87dd4d16b7b46203e199a4cc1
2024-03-10 03:18:32 -06:00
eldritch horrors 3e43f4aeff add test for inherit expr printing
(cherry picked from commit 73065a400d)
Change-Id: I9356d8084d241a7904b66554d7c4194f8433edf7
2024-03-10 03:18:32 -06:00
eldritch horrors 0c19e6b56c add test for inherit-from semantics
(cherry picked from commit 8669c02468)
Change-Id: If8513316bf4b4b559c5bb63842c856f016816802
2024-03-10 03:18:32 -06:00
eldritch horrors 7c882a5075 Merge "make the multi-node vm tests a bit more reliable" into main 2024-03-10 03:18:08 -06:00
eldritch horrors 34fb7a7e9d make the multi-node vm tests a bit more reliable
without these changes the tests will very repeatably (although not very
reliably) wedge in our runs. the ssh command starts, opens a sessions,
does something, the session closes again, but the test does not move on.
adding *just* the redirect and not the unit waits is not sufficient
either, it needs both. this feels like a bug in the nixos testing
framework somewhere, but digging that far is not in the cards right now.

Change-Id: Idab577b83a36cc4899bb5ffbb3d9adc04e83e51c
2024-03-10 10:10:52 +01:00
eldritch horrors a9b813cc3b Merge pull request #10066 from 9999years/print-all-frames
Do not skip any stack frames when `--show-trace` is given

(cherry picked from commit 0b47783d0a879875d558f0b56e49584f25ceb2d0)
Change-Id: Ia0f18266dbcf97543110110c655c219c7a3e3270
2024-03-09 10:17:26 -07:00
eldritch horrors f2e11ddce1 Merge pull request #9914 from 9999years/debugger-on-trace
Enter debugger on `builtins.trace` with an option

(cherry picked from commit 774e7ca5847ebc392eac2a124a8f12b24da4f65a)
Change-Id: If01e2110b3a128e639b05143227e365227d149f1
2024-03-09 10:17:26 -07:00
eldritch horrors 030c8aa833 Rename ProcessLineResult variants
(cherry picked from commit 8e71883e3f59100479e96aa1883ef52dbaa03fd3)
Change-Id: If7d8b75eaec623dac106ce2363fa148af37d150c
2024-03-09 10:17:26 -07:00
eldritch horrors 992d99592f :quit in the debugger should quit the whole program
(cherry picked from commit 2a8fe9a93837733e9dd9ed5c078734a35b203e14)
Change-Id: I71dadfef6b24d9272b206e9e2c408040559d8a1c
2024-03-09 10:17:26 -07:00
eldritch horrors 6b11c2cd70 Extract printSpace helper
(cherry picked from commit 403c90ddf58a3f16a44dfe1f20004b6baa4e5ce2)
Change-Id: I53c9824e6b1c4c619b4dfd8346d39e5289d92265
2024-03-09 07:20:23 -07:00
eldritch horrors 73cdaf44cf prettyPrint -> shouldPrettyPrint
(cherry picked from commit 1c5f5d4291df7bf80806e57c75d2ec67bced8616)
Change-Id: I7a517490e7baa5cef00716f6d6cfcbcbcdde11bf
2024-03-09 07:20:23 -07:00
eldritch horrors 4dabde0485 Add assertion for decreasing the indent
Co-authored-by: Théophane Hufschmitt <7226587+thufschmitt@users.noreply.github.com>
(cherry picked from commit a27651908fc1b5ef73a81e46434a408c5868fa7b)
Change-Id: I2ec78e234c1c6e982f7b05f81d8b8356daf6c274
2024-03-09 07:20:23 -07:00
eldritch horrors 1958152d14 Pretty-print values in the REPL
Pretty-print values in the REPL by printing each item in a list or
attrset on a separate line. When possible, single-item lists and
attrsets are printed on one line, as long as they don't contain a nested
list, attrset, or thunk.

Before:
```
{ attrs = { a = { b = { c = { }; }; }; }; list = [ 1 ]; list' = [ 1 2 3 ]; }
```

After:
```
{
  attrs = {
    a = {
      b = {
        c = { };
      };
    };
  };
  list = [ 1 ];
  list' = [
    1
    2
    3
  ];
}
```

(cherry picked from commit c0a15fb7d03dfb8f53bc6726c414bc88aa362592)
Change-Id: Ia2b41849165a5ddb63f7a8c272a2476b3e4292df
2024-03-09 07:20:23 -07:00
eldritch horrors b221a14f0a Merge pull request #9925 from 9999years/fmt-cleanup
Cleanup `fmt.hh`

(cherry picked from commit 47a1dbb4b8)
Change-Id: Id076a45cb39652f437fe3f8bda10c310a9894777
2024-03-09 07:00:13 -07:00
eldritch horrors 3d9c7fc1e7 Add comment
(cherry picked from commit 9723f533d8)
Change-Id: Idd729febc0bb8c7c8db72a0fae73b680f66767f4
2024-03-09 04:47:05 -07:00
eldritch horrors f536696b73 Add comments
(cherry picked from commit 474fc4078a)
Change-Id: I9f78f7afd8468d0ab676c0f60c4f7d6140128583
2024-03-09 04:47:05 -07:00
eldritch horrors f27a27f49e Remove EXCEPTION_NEEDS_THROW_SPEC
We're on C++ 20 now, we don't need this

(cherry picked from commit faaccecbc8)
Change-Id: I172fa336107fd18b1aac2262309682e0d7065d07
2024-03-09 04:47:05 -07:00
eldritch horrors 7eb15e13aa Attach positions to errors in derivationStrict
(cherry picked from commit 87dc4bc7d1)
Change-Id: Ib7509cbb1d246ca5aa3607ff860420fe7a754f6a
2024-03-09 04:47:05 -07:00
eldritch horrors 08252967a8 libexpr: Support structured error classes
While preparing PRs like #9753, I've had to change error messages in
dozens of code paths. It would be nice if instead of

    EvalError("expected 'boolean' but found '%1%'", showType(v))

we could write

    TypeError(v, "boolean")

or similar. Then, changing the error message could be a mechanical
refactor with the compiler pointing out places the constructor needs to
be changed, rather than the error-prone process of grepping through the
codebase. Structured errors would also help prevent the "same" error
from having multiple slightly different messages, and could be a first
step towards error codes / an error index.

This PR reworks the exception infrastructure in `libexpr` to
support exception types with different constructor signatures than
`BaseError`. Actually refactoring the exceptions to use structured data
will come in a future PR (this one is big enough already, as it has to
touch every exception in `libexpr`).

The core design is in `eval-error.hh`. Generally, errors like this:

    state.error("'%s' is not a string", getAttrPathStr())
      .debugThrow<TypeError>()

are transformed like this:

    state.error<TypeError>("'%s' is not a string", getAttrPathStr())
      .debugThrow()

The type annotation has moved from `ErrorBuilder::debugThrow` to
`EvalState::error`.

(cherry picked from commit c6a89c1a16)
Change-Id: Iced91ba4e00ca9e801518071fb43798936cbd05a
2024-03-09 04:47:05 -07:00
eldritch horrors d4c738fe4c Move PodIdx to pos-idx.hh and PosTable to pos-table.hh
(cherry picked from commit c62c21e29a)
Change-Id: Id4ea2fc33b0874b2f1f2a32cabcbeb0afa26808f
2024-03-09 04:47:05 -07:00
eldritch horrors 7673312ccc Merge pull request #9928 from 9999years/error-messages-in-nix-repl
Improve error printing in `nix repl`

(cherry picked from commit a8050d9b83)
Change-Id: I588f92d1dd4c546c98788b71403cc034f5e7129a
2024-03-09 03:37:35 -07:00