this is misleading at best and dangerous at worst. callers expect all
exceptions thrown here to signal build startup failure, and errors in
the build itself to be signaled through the promise. since this isn't
a virtual method it will always return the same kind of promise, i.e.
we can just call handleChildOutput in the one caller of startBuilder.
Change-Id: I65d06f96ec05a3fcdf2050dbbd87c417c308ecc9
all extant derived classes implement this method, making the default
implementation not very useful. should it ever be needed again it'll
be easy enough for derived classes to return an owning StringSource.
Change-Id: I65e041e7a4e7b161f0f404f4287cea5440b5a749
references remain forbidden because std::optional does not want to
contain them, and specializing generators to use pointers where we
can't use optionals is simply too much work for a feature we don't
even need. reference wrappers and bindings still work well enough.
Change-Id: I2e6ca74719584ce16e2357c452fdd5c5a9e23d5a
This reverts commit 596b0e0a04.
cygwin dropped the patch that necessitated this hack with 3.34, which is
still the current version of sqlite in cygwin. that was in 2020, i.e. we
absolutely should not have to keep this around (especially since it will
silently corrupt the library search path of things linking to libstore!)
Change-Id: I251508b36f26c30533996e8d286aa8e5373eff31
This merge commit returns to the previous state prior to the release but leaves the tag in the branch history.
Release created with releng/create_release.xsh
Change-Id: I4e4650d96de82b46c35171b3a9fc1e3a6ca8e6a1
This commit remove a check for the log level in the `printVersion()`
function that was making `nix --version` behaving weirdly and
inconsistently compared to other `nix-*` commands.
The root cause is the following code in `lix/nix/main.cc` that change
the log level at runtime if nix is call interactively:
```cpp
if (isatty(STDERR_FILENO)) {
verbosity = lvlNotice;
} else {
verbosity = lvlInfo;
}
```
This should be removed, but since it has more implication it's gonna be
done in another CL.
Fix: https://git.lix.systems/lix-project/lix/issues/620
Change-Id: Id2c83c51d7ef799ee2f9b8dbdd2bfaeaf2df6188
We have obliterated the support across the build system for these
include paths anywhere, so the codemod is now redundant and can go.
Change-Id: I54082f39752c6aac6429e1c24026211adae8221a
This is a breaking change for non-migrated external clients. External
users always need to use <lix/libcmd/foo.hh> type include paths now.
This is as was always planned with the include rearrangement.
Change-Id: I269be91ff9f9cc94d5d3043cf3e0bdf8db1d8edb
This fixes a bug where flakes do not actually do purity path checks
correctly.
Tested-By: Jade Lovelace <lix@jade.fyi>
Change-Id: If7d131a8e73a5874fb15cfaa0dea3b8811ba35d2
this is more of a theoretical problem, but it does allow changing the
behavior of a flake depending on mutable machine state. it's unlikely
that this could be used to reliably do anything bad, but it does lead
to even more non-determinstic evaluation of (notionally) pure flakes.
Change-Id: I5bac7ed045046da08a36c764ab887bc9c7551542
This fixes segfaults with nix copy when there was an error processing
addMultipleToStore.
Running with ASAN/TSAN pointed at an use-after-free with threads from
the pool accessing the graph declared in processGraph after the function
was exiting and destructing the variables.
It turns out that if there is an error before pool.process() is called,
for example while we are still enqueueing tasks, then pool.process()
isn't called and threads are still left to run.
By creating the pool last we ensure that it is stopped first before
running other destructors even if an exception happens early.
fixes#618
Change-Id: I42a355f632aa0354df94c5d5d8cbe7ab5196c9a6
SourcePath only manipulates path names now. all accesses must go through
a checked path going forward to ensure we don't escape restriction lists
of pure and restricted evaluation. if a directory path is checked it can
safely be assumed that the directory itself is allowed, and its contents
will likewise be safe to access. it is tempting to assumed that contents
will also be fine, but that's only true if the content is not a symlink.
Change-Id: Icec3098d53fe9dce50997954ba958fe4f304d59b
like earlier, anything accessed during eval must be checked against the
list of path restrictions. this notably excludes `Pos::getSource` which
is run only from an unrestricted context (resolving line/column numbers
for expressions), but since positions require the parser to run and the
parser requires a checked input to produce positions this is not a leak
Change-Id: I337859e9c780590d4434885125a3ef70a11f6e93
the purpose of resolveExprPath is to produce a parser input path. parser
input paths must be validated against the path allow list so they do not
escape the restricted/pure eval sandbox. checking the input path and any
intermediate paths during resolving makes this a lot harder to do badly.
Change-Id: Ib31b5bca63fe26a5e08458a871cdc9f92f9b6a10
in pure mode it is entirely useless. in impure mode it's mostly useless
since the way in which it is used is either equivalent to not being run
at all, or is equivalent to turning the following lstat into a stat. we
add a stat method instead for all those who need final symlinks stat'd.
Change-Id: I801886d18eb34b26e62b4c05d53318c6421a69bf
all files are physical, so this doesn't have to be optional. if it only
returns a copy of a member it's not useful either, but performance cost
Change-Id: Ib2f935ae247d96418d55bc100e04765dc586528b
after startTransfer the transfer, and thus downloadState, is gone. asan
hasn't caught this, presumably because the access is in libc somewhere.
we don't even need access to the old state; the assertion is not useful
here and clearing the previous exception is invisible to the new round.
Change-Id: I32dc1a487b96cbaabcf5061c9b1f96dbc5aaae49
Nixpkgs issues / PRs:
* https://github.com/NixOS/nixpkgs/pull/368091
* https://github.com/NixOS/nixpkgs/issues/369366
This can be triggered with the postgresql_14 derivation from nixpkgs rev
19305d94dacca226ca048b78e6de00f599c65858
(/nix/store/bxp6g57limvwiga61vdlyvhy7i8rp6wd-postgresql-14.15.drv on
x86_64-linux): for reasons unknown to me, only the `man` and `lib` outputs
are cached on cache.nixos.org:
$ nix derivation show /nix/store/bxp6g57limvwiga61vdlyvhy7i8rp6wd-postgresql-14.15.drv | jq '.[].outputs.[].path' -r | xargs nix path-info --store https://cache.nixos.org
warning: The interpretation of store paths arguments ending in `.drv` recently changed. If this command is now failing try again with '/nix/store/bxp6g57limvwiga61vdlyvhy7i8rp6wd-postgresql-14.15.drv^*'
don't know how to build these paths:
/nix/store/m9vb40xxr6gckjzpfxnqcmjqsks2gx03-postgresql-14.15
/nix/store/nm1415wa53iawar9axwxy0an6ximhayn-postgresql-14.15-dev
/nix/store/v9vrvfhiw9gk8hj9895sb15fxvxnyylj-postgresql-14.15-debug
/nix/store/zi12g1p99g2173i8093ixbqkfh9ng87b-postgresql-14.15-doc
/nix/store/3i3fpz0xss9inampf51gp3pkx24ypxpj-postgresql-14.15-man
/nix/store/db8797h2cp4rm1cnsqrf87apkkxwwdff-postgresql-14.15-lib
error: path '/nix/store/m9vb40xxr6gckjzpfxnqcmjqsks2gx03-postgresql-14.15' does not exist in the store
Also, the derivation uses the `outputChecks` feature (and thus `__structuredAttrs`)
to make sure that e.g. the `out` output doesn't reference the `man`
output:
__structuredAttrs = true;
outputs = [ "out" "dev" "doc" "lib" "man" ];
outputChecks.out.disallowedReferences = [ "dev" "doc" "man" ];
With all that in place, the following error was hit on all CppNix / Lix
versions currently supported when trying to build the derivation above:
error: derivation contains an illegal reference specifier 'man'
The following happened here:
* The `man` & `lib` outputs were substituted at some point.
* When register outputs, the reference checks are made.
* `LocalDerivationGoal::checkOutputs` gets a map of all outputs that
were built and are NOT already registered in the store. In the example
above this means `out`, `dev`, `debug` and `doc`.
* `checkOutputs` tries to resolve the `man` output and fails to do so
because it's a store-path that's already registered and thus not part
of the map passed to `checkOutputs`.
Since the map passed to `checkOutputs` is used in various other places
that appear to assume that the paths aren't registered already, I didn't
write the already registered paths into it. Instead, I created a second
map that contains all already registered outputs and pass it as third
argument to `checkOutputs`. If the other lookups fail, this map will be
now checked before the "illegal reference specifier"-error is thrown.
This fixes the problem with `postgresql_14` for me.
Also wrote a small regression test that fails locally without the patch
in place.
Change-Id: Ieacca80c001fcfbebf6f5fe97e25c49d2724c3ff
in a daemon all calls to the logger can throw an Interrupted exception,
which so far has silently stopped the curl thread without notifying its
transfers and leaving them stuck as a result. ensuring that the loggers
can never throw Interrupted will have very unpleasant side-effects, and
throwing depending on context requires large amount of bookkeeping. for
now it is easiest to abort all transfers on Interrupted during cleanup.
the test for this is extremely sketchy because we want to hit a single,
very specifically chosen, loger call in TransferItem::finish(). the bug
was triggered by the `act.progress` further down from what we're aiming
for, but that one is much harder to select for than the debug log here.
fixes#613
Change-Id: Id72efa64dd30cbbf256d2ab2a328457a0b095c6a
the flake input bump broke these due to packages being moved. also fix
renamed options while we are here, before they inevitably break later.
Change-Id: If16bb0a221e63ae7394af6b8d904c5ecd8994e6f
After gathering more community feedback, more non-trivial use cases for
overriding `__findFile` emerged. Unlike the use case of Tvix mentioned
in #599, these can't easily be worked around by overriding `nixPath`
instead.
This is the second fixup/partial revert for
81d5f0a7d9.
See also #599.
Change-Id: I7ca75e1a2b196c0da341969c61f4c168b5f657f9
When using the Mercurial fetcher on a local repository without explicitly
specifying a branch or revision, previously always the tip of the default
branch would be fetched. This is likely unexpected by the user, and
inconsistent with the Git fetcher as well as the dirty case. To reduce
surprises and restore consistency, fetch the currently checked out revision
instead.
Change-Id: Id6d58f958b710f7a9661dc66ad4ddcb8d06a0cdd
The Mercurial fetcher previously used the revision number supplied by Mercurial
as its revision count. This is inappropriate, as the revision number is
incremented each time a change is added to the local repository, so also
changes only reachable from other heads will be counted. For the same reason,
it will also depend on whether such changes have been fetched before from the
same repository, introducing an impurity. Instead the revisions have to be
counted explicitly, similar to the Git fetcher.
Change-Id: Idb1e66ae2fb8b05101116c815f453efd6e95b09e
Attribute names containing special characters like @ or . need to be
quoted, so we need to do our own tokenization of the command line for
completion, and quote the attribute names when we provide the completion.
Fixes: https://git.lix.systems/lix-project/lix/issues/450
Change-Id: I55a30dd272880c89445d9ded49b3f2c90cb19326
eldritch horrors