v2.1.4

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Changed

• Require virtualenv<20.33 to work around an issue where Poetry uses the wrong Python version (#​10491).
• Improve the error messages for the validation of the pyproject.toml file (#​10471).

Fixed

• Fix an issue where project plugins were installed even though poetry install was called with --no-plugins (#​10405).
• Fix an issue where dependency resolution failed for self-referential extras with duplicate dependencies (#​10488).

Docs

• Clarify how to include files that were automatically excluded via VCS ignore settings (#​10442).
• Clarify the behavior of poetry add if no version constraint is explicitly specified (#​10445).

v2.1.3

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Changed

• Require importlib-metadata<8.7 for Python 3.9 because of a breaking change in importlib-metadata 8.7 (#​10374).

Fixed

• Fix an issue where re-locking failed for incomplete multiple-constraints dependencies with explicit sources (#​10324).
• Fix an issue where the --directory option did not work if a plugin, which accesses the poetry instance during its activation, was installed (#​10352).
• Fix an issue where poetry env activate -v printed additional information to stdout instead of stderr so that the output could not be used as designed (#​10353).
• Fix an issue where the original error was not printed if building a git dependency failed (#​10366).
• Fix an issue where wheels for the wrong platform were installed in rare cases. (#​10361).

poetry-core (2.1.3)

• Fix an issue where the union of specific inverse or partially inverse markers was not simplified (#​858).
• Fix an issue where optional dependencies defined in the project section were treated as non-optional when a source was defined for them in the tool.poetry section (#​857).
• Fix an issue where markers with === were not parsed correctly (#​860).
• Fix an issue where local versions with upper case letters caused an error (#​859).
• Fix an issue where extra markers with a value starting with "in" were not validated correctly (#​862).

v2.1.2

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Changed

• Improve performance of locking dependencies (#​10275).

Fixed

• Fix an issue where markers were not locked correctly (#​10240).
• Fix an issue where the result of poetry lock was not deterministic (#​10276).
• Fix an issue where poetry env activate returned the wrong command for tcsh (#​10243).
• Fix an issue where poetry env activate returned the wrong command for pwsh on Linux (#​10256).

Docs

• Update basic usage section to reflect new default layout (#​10203).

poetry-core (2.1.2)

• Improve performance of marker operations (#​851).
• Fix an issue where incorrect markers were calculated when removing parts covered by the project's Python constraint (#​841,
  #​846).
• Fix an issue where extra markers were not simplified (#​842,
  #​845,
  #​847).
• Fix an issue where the intersection and union of markers was not deterministic (#​843).
• Fix an issue where the intersection of python_version markers was not recognized as empty (#​849).
• Fix an issue where python_version markers were not simplified (#​848,
  #​851).
• Fix an issue where Python constraints on a package were converted into invalid markers (#​853).

v2.1.1

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Fixed

• Fix an issue where poetry env use python does not choose the Python from the PATH (#​10187).

poetry-core (2.1.1)

• Fix an issue where simplifying a python_version marker resulted in an invalid marker (#​838).

v2.1.0

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Added

• Make build command build-system agnostic (#​10059,
  #​10092).
• Add a --config-settings option to poetry build (#​10059).
• Add support for defining config-settings when building dependencies (#​10129).
• Add (experimental) commands to manage Python installations (#​10112).
• Use findpython to find the Python interpreters (#​10097).
• Add a --no-truncate option to poetry show (#​9580).
• Re-add support for passwords with empty usernames (#​10088).
• Add better error messages (#​10053,
  #​10065,
  #​10126,
  #​10127,
  #​10132).

Changed

• poetry new defaults to "src" layout by default (#​10135).
• Improve performance of locking dependencies (#​10111,
  #​10114,
  #​10138,
  #​10146).
• Deprecate adding sources without specifying --priority (#​10134).

Fixed

• Fix an issue where global options were not handled correctly when positioned after command options (#​10021,
  #​10067,
  #​10128).
• Fix an issue where building a dependency from source failed because of a conflict between build-system dependencies that were not required for the target environment (#​10048).
• Fix an issue where poetry init was not able to find a package on PyPI while adding dependencies interactively (#​10055).
• Fix an issue where the @latest descriptor was incorrectly passed to the core requirement parser (#​10069).
• Fix an issue where Boolean environment variables set to True (in contrast to true) were interpreted as false (#​10080).
• Fix an issue where poetry env activate reported a misleading error message (#​10087).
• Fix an issue where adding an optional dependency with poetry add --optional would not correctly update the lock file (#​10076).
• Fix an issue where pip was not installed/updated before other dependencies resulting in a race condition (#​10102).
• Fix an issue where Poetry freezes when multiple threads attempt to unlock the keyring simultaneously (#​10062).
• Fix an issue where markers with extras were not locked correctly (#​10119).
• Fix an issue where self-referential extras were not resolved correctly (#​10106).
• Fix an issue where Poetry could not be run from a zipapp (#​10074).
• Fix an issue where installation failed with a permission error when using the system environment as a user without write access to system site packages (#​9014).
• Fix an issue where a version of a dependency that is not compatible with the project's python constraint was locked. (#​10141).
• Fix an issue where Poetry wrongly reported that the current project's supported Python range is not compatible with some of the required packages Python requirement (#​10157).
• Fix an issue where the requested extras of a dependency were ignored if the same dependency (with same extras) was specified in multiple groups (#​10158).

Docs

• Sort commands by name in the CLI reference (#​10035).
• Add missing documentation for env commands (#​10027).
• Clarify that the name and version fields are always required if the project section is specified (#​10033).
• Add a note about restarting the shell for tab completion changes to take effect (#​10070).
• Fix the example for project.gui-scripts #​10121.
• Explain how to include files as scripts in the project configuration (#​9572,
  #​10133).
• Add additional information on specifying required python versions (#​10104).

poetry-core (2.1.0)

• Fix an issue where inclusive ordering with post releases was inconsistent with PEP 440 (#​379).
• Fix an issue where invalid URI tokens in PEP 508 requirement strings were silently discarded (#​817).
• Fix an issue where wrong markers were calculated when removing parts covered by the project's python constraint (#​824).
• Fix an issue where optional dependencies that are not part of an extra were included in the wheel metadata (#​830).
• Fix an issue where the __pycache__ directory and *.pyc files were included in sdists and wheels (#​835).

v2.0.1

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Added

• Add support for poetry search in legacy sources (#​9949).
• Add a message in the poetry source show output when PyPI is implicitly enabled (#​9974).

Changed

• Improve performance for merging markers from overrides at the end of dependency resolution (#​10018).

Fixed

• Fix an issue where poetry sync did not remove packages that were not requested (#​9946).
• Fix an issue where poetry check failed even though there were just warnings and add a --strict option to fail on warnings (#​9983).
• Fix an issue where poetry update, poetry add and poetry remove with --only uninstalled packages from other groups (#​10014).
• Fix an issue where poetry update, poetry add and poetry remove uninstalled all extra packages (#​10016).
• Fix an issue where poetry self update did not recognize Poetry's own environment (#​9995).
• Fix an issue where read-only system site-packages were not considered when loading an environment with system site-packages (#​9942).
• Fix an issue where an error message in poetry install started with Warning: instead of Error: (#​9945).
• Fix an issue where Command.set_poetry, which is used by plugins, was removed (#​9981).
• Fix an issue where the help text of poetry build --clean showed a malformed short option instead of the description (#​9994).

Docs

• Add a FAQ entry for the migration from Poetry-specific fields to the project section (#​9996).
• Fix examples for project.readme and project.urls (#​9948).
• Add a warning that package sources are a Poetry-specific feature that is not included in core metadata (#​9935).
• Replace poetry install --sync with poetry sync in the section about synchronizing dependencies (#​9944).
• Replace poetry shell with poetry env activate in the basic usage section (#​9963).
• Mention that project.name is always required when the project section is used (#​9989).
• Fix the constraint of poetry-plugin-export in the section about poetry export (#​9954).

poetry-core (2.0.1)

• Replace the deprecated core metadata field Home-page with Project-URL: Homepage (#​807).
• Fix an issue where includes from tool.poetry.packages without a specified format were not initialized with the default value resulting in a KeyError (#​805).
• Fix an issue where some project.urls entries were not processed correctly resulting in a KeyError (#​807).
• Fix an issue where dynamic project.dependencies via tool.poetry.dependencies were ignored if project.optional-dependencies were defined (#​811).

v1.9.0

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Added

• Add an --all-groups option to export dependencies from all groups (#​294).

Changed

• Drop support for Python 3.8 (#​300).
• Clarify the help text of --with and --only and deprecate --without (#​212).
• Fail if the poetry.lock file is not consistent with the pyproject.toml file (#​310).

Fixed

• Fix an issue where the export failed with the message "dependency walk failed".
  This fix requires a poetry.lock file created with Poetry 2.x (#​286).
• Fix an issue where the pre-commit hook regex matched wrong files (#​285).

v1.89.0

Compare Source

==========================

Language

• Stabilize explicitly inferred const arguments (feature(generic_arg_infer))
• Add a warn-by-default mismatched_lifetime_syntaxes lint.
  This lint detects when the same lifetime is referred to by different syntax categories between function arguments and return values, which can be confusing to read, especially in unsafe code.
  This lint supersedes the warn-by-default elided_named_lifetimes lint.
• Expand unpredictable_function_pointer_comparisons to also lint on function pointer comparisons in external macros
• Make the dangerous_implicit_autorefs lint deny-by-default
• Stabilize the avx512 target features
• Stabilize kl and widekl target features for x86
• Stabilize sha512, sm3 and sm4 target features for x86
• Stabilize LoongArch target features f, d, frecipe, lasx, lbt, lsx, and lvz
• Remove i128 and u128 from improper_ctypes_definitions
• Stabilize repr128 (#[repr(u128)], #[repr(i128)])
• Allow #![doc(test(attr(..)))] everywhere
• Extend temporary lifetime extension to also go through tuple struct and tuple variant constructors
• extern "C" functions on the wasm32-unknown-unknown target now have a standards compliant ABI

Compiler

• Default to non-leaf frame pointers on aarch64-linux
• Enable non-leaf frame pointers for Arm64EC Windows
• Set Apple frame pointers by architecture

Platform Support

• Add new Tier-3 targets loongarch32-unknown-none and loongarch32-unknown-none-softfloat
• x86_64-apple-darwin is in the process of being demoted to Tier 2 with host tools

Refer to Rust's platform support page
for more information on Rust's tiered platform support.

Libraries

• Specify the base path for file!
• Allow storing format_args!() in a variable
• Add #[must_use] to [T; N]::map
• Implement DerefMut for Lazy{Cell,Lock}
• Implement Default for array::IntoIter
• Implement Clone for slice::ChunkBy
• Implement io::Seek for io::Take

Stabilized APIs

• NonZero<char>
• Many intrinsics for x86, not enumerated here
  • AVX512 intrinsics
  • SHA512, SM3 and SM4 intrinsics
• File::lock
• File::lock_shared
• File::try_lock
• File::try_lock_shared
• File::unlock
• NonNull::from_ref
• NonNull::from_mut
• NonNull::without_provenance
• NonNull::with_exposed_provenance
• NonNull::expose_provenance
• OsString::leak
• PathBuf::leak
• Result::flatten
• std::os::linux::net::TcpStreamExt::quickack
• std::os::linux::net::TcpStreamExt::set_quickack

These previously stable APIs are now stable in const contexts:

• <[T; N]>::as_mut_slice
• <[u8]>::eq_ignore_ascii_case
• str::eq_ignore_ascii_case

Cargo

• cargo fix and cargo clippy --fix now default to the same Cargo target selection as other build commands. Previously it would apply to all targets (like binaries, examples, tests, etc.). The --edition flag still applies to all targets.
• Stabilize doctest-xcompile. Doctests are now tested when cross-compiling. Just like other tests, it will use the runner setting to run the tests. If you need to disable tests for a target, you can use the ignore doctest attribute to specify the targets to ignore.

Rustdoc

• On mobile, make the sidebar full width and linewrap. This makes long section and item names much easier to deal with on mobile.

Compatibility Notes

• Make missing_fragment_specifier an unconditional error
• Enabling the neon target feature on aarch64-unknown-none-softfloat causes a warning because mixing code with and without that target feature is not properly supported by LLVM
• Sized Hierarchy: Part I
  • Introduces a small breaking change affecting ?Sized bounds on impls on recursive types which contain associated type projections. It is not expected to affect any existing published crates. Can be fixed by refactoring the involved types or opting into the sized_hierarchy unstable feature. See the FCP report for a code example.
• The warn-by-default elided_named_lifetimes lint is superseded by the warn-by-default mismatched_lifetime_syntaxes lint.
• Error on recursive opaque types earlier in the type checker
• Type inference side effects from requiring element types of array repeat expressions are Copy are now only available at the end of type checking
• The deprecated accidentally-stable std::intrinsics::{copy,copy_nonoverlapping,write_bytes} are now proper intrinsics. There are no debug assertions guarding against UB, and they cannot be coerced to function pointers.
• Remove long-deprecated std::intrinsics::drop_in_place
• Make well-formedness predicates no longer coinductive
• Remove hack when checking impl method compatibility
• Remove unnecessary type inference due to built-in trait object impls
• Lint against "stdcall", "fastcall", and "cdecl" on non-x86-32 targets
• Future incompatibility warnings relating to the never type (!) are now reported in dependencies
• Ensure std::ptr::copy_* intrinsics also perform the static self-init checks
• extern "C" functions on the wasm32-unknown-unknown target now have a standards compliant ABI

Internal Changes

These changes do not affect any public interfaces of Rust, but they represent
significant improvements to the performance or internals of rustc and related
tools.

• Correctly un-remap compiler sources paths with the rustc-dev component

v1.88.0

Compare Source

==========================

Language

• Stabilize #![feature(let_chains)] in the 2024 edition.
  This feature allows &&-chaining let statements inside if and while, allowing intermixture with boolean expressions. The patterns inside the let sub-expressions can be irrefutable or refutable.
• Stabilize #![feature(naked_functions)].
  Naked functions allow writing functions with no compiler-generated epilogue and prologue, allowing full control over the generated assembly for a particular function.
• Stabilize #![feature(cfg_boolean_literals)].
  This allows using boolean literals as cfg predicates, e.g. #[cfg(true)] and #[cfg(false)].
• Fully de-stabilize the #[bench] attribute. Usage of #[bench] without #![feature(custom_test_frameworks)] already triggered a deny-by-default future-incompatibility lint since Rust 1.77, but will now become a hard error.
• Add warn-by-default dangerous_implicit_autorefs lint against implicit autoref of raw pointer dereference.
  The lint will be bumped to deny-by-default in the next version of Rust.
• Add invalid_null_arguments lint to prevent invalid usage of null pointers.
  This lint is uplifted from clippy::invalid_null_ptr_usage.
• Change trait impl candidate preference for builtin impls and trivial where-clauses.
• Check types of generic const parameter defaults

Compiler

• Stabilize -Cdwarf-version for selecting the version of DWARF debug information to generate.

Platform Support

• Demote i686-pc-windows-gnu to Tier 2.

Refer to Rust's platform support page
for more information on Rust's tiered platform support.

Libraries

• Remove backticks from #[should_panic] test failure message.
• Guarantee that [T; N]::from_fn is generated in order of increasing indices., for those passing it a stateful closure.
• The libtest flag --nocapture is deprecated in favor of the more consistent --no-capture flag.
• Guarantee that {float}::NAN is a quiet NaN.

Stabilized APIs

• Cell::update
• impl Default for *const T
• impl Default for *mut T
• HashMap::extract_if
• HashSet::extract_if
• hint::select_unpredictable
• proc_macro::Span::line
• proc_macro::Span::column
• proc_macro::Span::start
• proc_macro::Span::end
• proc_macro::Span::file
• proc_macro::Span::local_file
• <[T]>::as_chunks
• <[T]>::as_chunks_mut
• <[T]>::as_chunks_unchecked
• <[T]>::as_chunks_unchecked_mut
• <[T]>::as_rchunks
• <[T]>::as_rchunks_mut
• mod ffi::c_str

These previously stable APIs are now stable in const contexts:

• NonNull<T>::replace
• <*mut T>::replace
• std::ptr::swap_nonoverlapping
• Cell::replace
• Cell::get
• Cell::get_mut
• Cell::from_mut
• Cell::as_slice_of_cells

Cargo

• Stabilize automatic garbage collection.
• use zlib-rs for gzip compression in rust code

Rustdoc

• Doctests can be ignored based on target names using ignore-* attributes.
• Stabilize the --test-runtool and --test-runtool-arg CLI options to specify a program (like qemu) and its arguments to run a doctest.

Compatibility Notes

• Finish changing the internal representation of pasted tokens. Certain invalid declarative macros that were previously accepted in obscure circumstances are now correctly rejected by the compiler. Use of a tt fragment specifier can often fix these macros.
• Fully de-stabilize the #[bench] attribute. Usage of #[bench] without #![feature(custom_test_frameworks)] already triggered a deny-by-default future-incompatibility lint since Rust 1.77, but will now become a hard error.
• Fix borrow checking some always-true patterns.
  The borrow checker was overly permissive in some cases, allowing programs that shouldn't have compiled.
• Update the minimum external LLVM to 19.
• Make it a hard error to use a vector type with a non-Rust ABI without enabling the required target feature.

v1.87.0

Compare Source

==========================

Language

• Stabilize asm_goto feature
• Allow parsing open beginning ranges (..EXPR) after unary operators !, -, and *.
• Don't require method impls for methods with Self: Sized bounds in impls for unsized types
• Stabilize feature(precise_capturing_in_traits) allowing use<...> bounds on return position impl Trait in traits

Compiler

• x86: make SSE2 required for i686 targets and use it to pass SIMD types

Platform Support

• Remove i586-pc-windows-msvc target

Refer to Rust's platform support page
for more information on Rust's tiered platform support.

Libraries

• Stabilize the anonymous pipe API
• Add support for unbounded left/right shift operations
• Print pointer metadata in Debug impl of raw pointers
• Vec::with_capacity guarantees it allocates with the amount requested, even if Vec::capacity returns a different number.
• Most std::arch intrinsics which don't take pointer arguments can now be called from safe code if the caller has the appropriate target features already enabled (https://github.com/rust-lang/stdarch/pull/1714, https://github.com/rust-lang/stdarch/pull/1716, https://github.com/rust-lang/stdarch/pull/1717)
• Undeprecate env::home_dir
• Denote ControlFlow as #[must_use]
• Macros such as assert_eq! and vec! now support const {...} expressions

Stabilized APIs

• Vec::extract_if
• vec::ExtractIf
• LinkedList::extract_if
• linked_list::ExtractIf
• <[T]>::split_off
• <[T]>::split_off_mut
• <[T]>::split_off_first
• <[T]>::split_off_first_mut
• <[T]>::split_off_last
• <[T]>::split_off_last_mut
• String::extend_from_within
• os_str::Display
• OsString::display
• OsStr::display
• io::pipe
• io::PipeReader
• io::PipeWriter
• impl From<PipeReader> for OwnedHandle
• impl From<PipeWriter> for OwnedHandle
• impl From<PipeReader> for Stdio
• impl From<PipeWriter> for Stdio
• impl From<PipeReader> for OwnedFd
• impl From<PipeWriter> for OwnedFd
• Box<MaybeUninit<T>>::write
• impl TryFrom<Vec<u8>> for String
• <*const T>::offset_from_unsigned
• <*const T>::byte_offset_from_unsigned
• <*mut T>::offset_from_unsigned
• <*mut T>::byte_offset_from_unsigned
• NonNull::offset_from_unsigned
• NonNull::byte_offset_from_unsigned
• <uN>::cast_signed
• NonZero::<uN>::cast_signed.
• <iN>::cast_unsigned.
• NonZero::<iN>::cast_unsigned.
• <uN>::is_multiple_of
• <uN>::unbounded_shl
• <uN>::unbounded_shr
• <iN>::unbounded_shl
• <iN>::unbounded_shr
• <iN>::midpoint
• <str>::from_utf8
• <str>::from_utf8_mut
• <str>::from_utf8_unchecked
• <str>::from_utf8_unchecked_mut

These previously stable APIs are now stable in const contexts:

• core::str::from_utf8_mut
• <[T]>::copy_from_slice
• SocketAddr::set_ip
• SocketAddr::set_port,
• SocketAddrV4::set_ip
• SocketAddrV4::set_port,
• SocketAddrV6::set_ip
• SocketAddrV6::set_port
• SocketAddrV6::set_flowinfo
• SocketAddrV6::set_scope_id
• char::is_digit
• char::is_whitespace
• <[[T; N]]>::as_flattened
• <[[T; N]]>::as_flattened_mut
• String::into_bytes
• String::as_str
• String::capacity
• String::as_bytes
• String::len
• String::is_empty
• String::as_mut_str
• String::as_mut_vec
• Vec::as_ptr
• Vec::as_slice
• Vec::capacity
• Vec::len
• Vec::is_empty
• Vec::as_mut_slice
• Vec::as_mut_ptr

Cargo

• Add terminal integration via ANSI OSC 9;4 sequences
• chore: bump openssl to v3
• feat(package): add --exclude-lockfile flag

Compatibility Notes

• Rust now raises an error for macro invocations inside the #![crate_name] attribute
• Unstable fields are now always considered to be inhabited
• Macro arguments of unary operators followed by open beginning ranges may now be matched differently
• Make Debug impl of raw pointers print metadata if present
• Warn against function pointers using unsupported ABI strings in dependencies
• Associated types on dyn types are no longer deduplicated
• Forbid attributes on .. inside of struct patterns (let Struct { #[attribute] .. }) =
• Make ptr_cast_add_auto_to_object lint into hard error
• Many std::arch intrinsics are now safe to call in some contexts, there may now be new unused_unsafe warnings in existing codebases.
• Limit width and precision formatting options to 16 bits on all targets
• Turn order dependent trait objects future incompat warning into a hard error
• Denote ControlFlow as #[must_use]
• Windows: The standard library no longer links advapi32, except on win7. Code such as C libraries that were relying on this assumption may need to explicitly link advapi32.
• Proc macros can no longer observe expanded cfg(true) attributes.
• Start changing the internal representation of pasted tokens. Certain invalid declarative macros that were previously accepted in obscure circumstances are now correctly rejected by the compiler. Use of a tt fragment specifier can often fix these macros.
• Don't allow flattened format_args in const.

Internal Changes

These changes do not affect any public interfaces of Rust, but they represent
significant improvements to the performance or internals of rustc and related
tools.

• Update to LLVM 20

v1.86.0

Compare Source

==========================

Language

• Stabilize upcasting trait objects to supertraits.
• Allow safe functions to be marked with the #[target_feature] attribute.
• The missing_abi lint now warns-by-default.
• Rust now lints about double negations, to catch cases that might have intended to be a prefix decrement operator (--x) as written in other languages. This was previously a clippy lint, clippy::double_neg, and is now available directly in Rust as double_negations.
• More pointers are now detected as definitely not-null based on their alignment in const eval.
• Empty repr() attribute applied to invalid items are now correctly rejected.
• Inner attributes #![test] and #![rustfmt::skip] are no longer accepted in more places than intended.

Compiler

• Debug-assert that raw pointers are non-null on access.
• Change -O to mean -C opt-level=3 instead of -C opt-level=2 to match Cargo's defaults.
• Fix emission of overflowing_literals under certain macro environments.

Platform Support

• Replace i686-unknown-redox target with i586-unknown-redox.
• Increase baseline CPU of i686-unknown-hurd-gnu to Pentium 4.
• New tier 3 targets:
  • {aarch64-unknown,x86_64-pc}-nto-qnx710_iosock.
    For supporting Neutrino QNX 7.1 with io-socket network stack.
  • {aarch64-unknown,x86_64-pc}-nto-qnx800.
    For supporting Neutrino QNX 8.0 (no_std-only).
  • {x86_64,i686}-win7-windows-gnu.
    Intended for backwards compatibility with Windows 7. {x86_64,i686}-win7-windows-msvc are the Windows MSVC counterparts that already exist as Tier 3 targets.
  • [