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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 6c08fba533ef31cad2bdc03ba72ecf58dc8ee5a0)
Change-Id: Ia887f629305645bb8a165fbbc0d32e620912595a
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(cherry picked from commit 73065a400d176b21f518c1f4ece90c31318b218d)
Change-Id: I9356d8084d241a7904b66554d7c4194f8433edf7
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(cherry picked from commit 8669c02468994887be91072ac58b1ee43380d354)
Change-Id: If8513316bf4b4b559c5bb63842c856f016816802
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Do not skip any stack frames when `--show-trace` is given
(cherry picked from commit 0b47783d0a879875d558f0b56e49584f25ceb2d0)
Change-Id: Ia0f18266dbcf97543110110c655c219c7a3e3270
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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
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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 c6a89c1a1659b31694c0fbcd21d78a6dd521c732)
Change-Id: Iced91ba4e00ca9e801518071fb43798936cbd05a
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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
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Print the value in `value is X while a Y is expected` error
(cherry picked from commit 5f72a97092da6af28a7d2b2a50d74e9d34fae7e1)
Change-Id: Idb4bc903ae59a0f5b6fb3b1da4d47970fe0a6efe
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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
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Restore `builtins.pathExists` behavior on broken symlinks
(cherry picked from commit d53c8901ef7f2033855dd99063522e3d56a19dab)
===
note that this variant differs markedly from the source commit because
we haven't endured quite as much lazy trees.
Change-Id: I0facf282f21fe0db4134be5c65a8368c1b3a06fc
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Color `diff` output in `tests/functional/lang` tests
(cherry picked from commit 1dc55c0f2f034bce6e3de4a5cda96d686b10a7f8)
Change-Id: Ie9b3fc3446bd3caa0fd8885de88639516a2ff862
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tests/functional/lang: Test substring with negative length
(cherry picked from commit 86156d05dd33f856d8804f89669a7fe9b81f1a0d)
Change-Id: I2e2086027a43f8111ba5068ac16590eaa0b798d4
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Fix performance of builtins.substring for empty substrings
(cherry picked from commit b2deff1947c2fe57fdbf1a472eb9003eb407f8d3)
Change-Id: I4ddfc8d26a4781c9520fff9807849a073ee7bed8
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Fix segfault on infinite recursion in some cases
(cherry picked from commit bf1b294bd81ca76c5ec9fe3ecd52196bf52a8300)
Change-Id: Id137541426ec8536567835953fccf986a3aebf16
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Remove some blank lines from stack traces
(cherry picked from commit cea83544362bd6426e9bc0b7dd0d611c19b0e3fd)
Change-Id: Ic1af8b09e9994d3c69fd3b37ae47a4bb786a15a1
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Pass positions when evaluating
(cherry picked from commit c8458bd731eb1c74159bebe459ea00165e056b65)
Change-Id: I1b4a5d58973be6264ffdb23b4492da200fdb71be
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Add `builtins.addDrvOutputDependencies`
(cherry picked from commit a58d7f143ec995a45745c2176bfebcc3e011db58)
Change-Id: Ia5a1790bf29dfaf29287cc35cdae6b6d650e7a83
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Fix language tests a bit
(cherry picked from commit e92cac789fc84b116a03db04a5f7de8df48e34cd)
Change-Id: I527e94c5af0921ff2559ce5a4ac7635be791c22e
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Don't print unknown locations unless requested for dev purposes
(cherry picked from commit 3dd4475826dff8052fef42d4600b61e6b91950ac)
Change-Id: I04a91277d1d9d09f5c1bf4a28fc99f0702b161e5
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This restores the symlink handling behaviour prior to
94812cca98fbb157e5f64a15a85a2b852d289feb.
Fixes #9298.
(cherry picked from commit 31ebc6028b3682969d86a7b39ae87131c41cc604)
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I think it is bad for these reasons when `tests/` contains a mix of
functional and integration tests
- Concepts is harder to understand, the documentation makes a good
unit vs functional vs integration distinction, but when the
integration tests are just two subdirs within `tests/` this is not
clear.
- Source filtering in the `flake.nix` is more complex. We need to
filter out some of the dirs from `tests/`, rather than simply pick
the dirs we want and take all of them. This is a good sign the
structure of what we are trying to do is not matching the structure
of the files.
With this change we have a clean:
```shell-session
$ git show 'HEAD:tests'
tree HEAD:tests
functional/
installer/
nixos/
```
(cherry picked from commit 68c81c737571794f7246db53fb4774e94fcf4b7e)
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