2.9.0

Changed

• Sort weeds by line number and then by column. (#155)
• Show unit names in output. (#156)
• Significantly improve weeders performance when using type-class-roots = false. (#172)
• Use Glob to find .hie files. This can avoid an infinite loop with recursive symlinks. (#165)
• Build with lens-5.3. (#173)

Fixed

• Weeder now correctly reports TOML parse errors. (#161)

2.8.0

Added

• Weeder now supports GHC 9.8. (#142)

2.7.0

Added

• Weeder now supports type class instances. Type class instances can be marked as roots with the root-instances configuration option. (#126, #133, #136)
• Weeder now optionally detects uses of types, excluding type family instances. This can be enabled with the unused-types configuration option. (#132)
• Weeder's analysis now runs in parallel. This can almost halve execution time when given enough cores. Enabled by calling Weeder with -j X or -N. (#137)
• --write-default-config flag to write and read a default configuration, if no configuration file is found. (#133)

Changed

• All configuration options now have default values. This can be disabled with the --no-default-fields flag. (#133)
• Weeder will now use distinct exit codes for certain failures. See README.md for more details. (#134)

2.6.0

Added

• Weeder now supports GHC 9.6.

Changed

• Weeder now uses TOML as a configuration format. Please see Weeder's README for more information on the configuration format.
• Weeder now sorts weeds in a single file by ascending line number

Fixed

• Weeder now internally adds declarations once. This shouldn't result in any user visible changes, but may improve performance.

2.5.0

• Weeder has been upgraded to support GHC 9.4 (only). As this changes the format of .hie files accepted, this is a major version bump. Thanks to @tfausak!

2.4.1

• Build with lens-5.2

2.4.0

• Weeder has been upgraded to support GHC 9.2 (only). As this changes the format of .hie files accepted, this is a major version bump.

2.3.1

This is the last release of weeder compatible with GHC 9.0.

• Weeder now analyzes top-level pattern bindings. For example, with the following input:

  module Dep (a, b) where
  
  xxx :: Int
  xxx = 3
  
  a, b :: Int
  (a, b) = (xxx, 1)

  ... weeder will determine that both a and b depend on xxx. While this is an over-approximation, it prevents weeder from reporting false positives. For more information, see #92.

• Corrected a typo in --help (#96).

• Shorten the help text for --require-hs-files (#97).

• Allow algebraic-graphs-0.6 (#95).

• Allow Dhall 1.41 (#99).

• Allow optparse-applicative-0.17 (#100).

2.3.0

• Switch to GHC 9

2.2.0

This will likely be the last Weeder release before GHC 9.

• Allow configuration of the HIE file extension using the --hie-extension command-line flag
• Add --require-hs-files switch. If supplied, this switch means Weeder will only consider .hie files where a corresponding .hs file can be found. (#50)
• Pattern synonyms are now considered (#79)
• Weeder's output format is now one-line-per-weed (#62)
• --hie-extension can be used to change the extension used for .hie files (#64)