chore: release v0.9.0

[github-actions]

🤖 New release

• koca: 0.8.0 -> 0.9.0 (⚠ API breaking changes)

⚠ koca breaking changes

--- failure auto_trait_impl_removed: auto trait no longer implemented ---

Description:
A public type has stopped implementing one or more auto traits. This can break downstream code that depends on the traits being implemented.
        ref: https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/auto_trait_impl_removed.ron

Failed in:
  type Backend is no longer Sync, in /tmp/.tmphJ7BXG/koca/crates/koca/src/backend/mod.rs:40

--- failure enum_missing: pub enum removed or renamed ---

Description:
A publicly-visible enum cannot be imported by its prior path. A `pub use` may have been removed, or the enum itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/enum_missing.ron

Failed in:
  enum koca::backend::types::Event, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:133
  enum koca::backend::Event, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:133

--- failure enum_struct_variant_changed_kind: An enum struct variant changed kind ---

Description:
A pub enum's struct variant with at least one pub field has changed to a different kind of enum variant, breaking access to its pub fields.
        ref: https://doc.rust-lang.org/reference/items/enumerations.html
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/enum_struct_variant_changed_kind.ron

Failed in:
  variant InstallEvent::Start in /tmp/.tmphJ7BXG/koca/crates/koca/src/backend/types.rs:170
  variant InstallEvent::Start in /tmp/.tmphJ7BXG/koca/crates/koca/src/backend/types.rs:170
  variant RemoveEvent::Start in /tmp/.tmphJ7BXG/koca/crates/koca/src/backend/types.rs:191
  variant RemoveEvent::Start in /tmp/.tmphJ7BXG/koca/crates/koca/src/backend/types.rs:191

--- failure enum_struct_variant_field_missing: pub enum struct variant's field removed or renamed ---

Description:
A publicly-visible enum has a struct variant whose field is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/enum_struct_variant_field_missing.ron

Failed in:
  field total_packages of variant DownloadEvent::Start, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:153
  field total_packages of variant DownloadEvent::Start, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:153
  field total of variant InstallEvent::Action, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:177
  field total of variant InstallEvent::ItemDone, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:183
  field total of variant InstallEvent::Hook, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:188
  field total of variant InstallEvent::Action, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:177
  field total of variant InstallEvent::ItemDone, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:183
  field total of variant InstallEvent::Hook, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:188
  field total of variant RemoveEvent::Action, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:203
  field total of variant RemoveEvent::ItemDone, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:209
  field total of variant RemoveEvent::Action, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:203
  field total of variant RemoveEvent::ItemDone, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/types.rs:209

--- failure enum_variant_added: enum variant added on exhaustive enum ---

Description:
A publicly-visible enum without #[non_exhaustive] has a new variant.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#enum-variant-new
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/enum_variant_added.ron

Failed in:
  variant KocaError:ElevationFailed in /tmp/.tmphJ7BXG/koca/crates/koca/src/error.rs:87

--- failure function_missing: pub fn removed or renamed ---

Description:
A publicly-visible function cannot be imported by its prior path. A `pub use` may have been removed, or the function itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/function_missing.ron

Failed in:
  function koca::backend::run_backend_loop, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/mod.rs:93
  function koca::source::fetch_source, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/source/fetch.rs:58

--- failure inherent_method_missing: pub method removed or renamed ---

Description:
A publicly-visible method or associated fn is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/inherent_method_missing.ron

Failed in:
  BuildFile::run_build_with_output, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/file/mod.rs:783
  BuildFile::run_package_for_with_output, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/file/mod.rs:797
  SourceProgress::new, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/source/fetch.rs:30
  Backend::spawn, previously in file /home/runner/work/koca/koca/target/package/koca-0.8.0/src/backend/mod.rs:40

--- failure method_parameter_count_changed: pub method parameter count changed ---

Description:
A publicly-visible method now takes a different number of parameters, not counting the receiver (self) parameter.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#fn-change-arity
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/method_parameter_count_changed.ron

Failed in:
  koca::BuildFile::run_build takes 0 parameters in /home/runner/work/koca/koca/target/package/koca-0.8.0/src/file/mod.rs:775, but now takes 1 parameters in /tmp/.tmphJ7BXG/koca/crates/koca/src/file/mod.rs:799
  koca::BuildFile::run_package_for takes 1 parameters in /home/runner/work/koca/koca/target/package/koca-0.8.0/src/file/mod.rs:793, but now takes 5 parameters in /tmp/.tmphJ7BXG/koca/crates/koca/src/file/mod.rs:822

--- failure struct_with_pub_fields_changed_type: struct with pub fields became an enum or union ---

Description:
A struct with pub fields became an enum or union, breaking accesses to its public fields.
        ref: https://github.com/obi1kenobi/cargo-semver-checks/issues/297#issuecomment-1399099659
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/struct_with_pub_fields_changed_type.ron

Failed in:
  struct koca::source::SourceProgress became enum in file /tmp/.tmphJ7BXG/koca/crates/koca/src/source/fetch.rs:9

Changelog

0.9.0 - 2026-07-30

Added

• make the Koca library frontend-agnostic (#63)

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This PR was generated with release-plz.