cabal-plan

Library and utility for processing cabal's plan.json file

Stackage Nightly 2019-12-08:0.6.2.0
Latest on Hackage:0.6.2.0

See all snapshots cabal-plan appears in

GPL-2.0-or-later licensed by Herbert Valerio Riedel
Maintained by hvr@gnu.org

Module documentation for 0.6.2.0

This version can be pinned in stack with:cabal-plan-0.6.2.0@sha256:648b70896d310ec5f14c69f58696f636ccba5b3109a64dc4e30daece28f74aa3,5261

This package provides a library (see Cabal.Plan) for decoding plan.json files as well as the simple tool cabal-plan for extracting and pretty printing the information contained in the plan.json file.

plan.json files are generated by cabal's Nix-style local builds and contain detailed information about the build/install plan computed by the cabal solver.

cabal-plan utility

The cabal-plan executable (enabled via the exe cabal flag) provides various operations:

info
Show basic report of dependency tree
show
Dump PlanJson data-structure via Show instance
tred
Show dependency tree as a graph
diff
Diff two install plans
list-bins
List all binaries
list-bin
List single binary (useful for scripting, e.g. cabal list-bin exe:cabal-plan)
fingerprint
Print SHA256 sums of dependencies' source tarballs and cabal files
dot
Generate graph of dependencies in .dot format
topo
Print plan topologically sorted
license-report
Generate license report for a component (only available when built with license-report flag enabled); see report example for cabal-plan (Pandoc rendered HTML)

See also "New things in Haskell package QA" Blogpost for a description of the topo and dot operations as well as how to enable tab-completion.

Changes

Revision history for cabal-plan

0.6.2.0

lib:cabal-plan Library

  • Add findPlanJson function

exe:cabal-plan Executable

  • Drop process-extras dependency

0.6.1.0

lib:cabal-plan Library

No changes

exe:cabal-plan Executable

  • dot command got new options

    • --root to limit graph to specific roots
    • --output to write directly to some file
    • --run-dot-png and --run-dot-pdf to run dot for you
  • cabal-plan executable depends on optics-core instead of lens. Therefore is buildable only with GHC-8.0+

0.6.0.0

lib:cabal-plan Library

  • ExactPath constructor to skip find in findAndDecodePlanJson. (Note: see also decodePlanJson)

exe:cabal-plan Executable

  • --plan-json for exact plan.json location
  • --relative search for project root relative to that directory
  • --colors=auto|never|always flag
  • tred command to print transtive reduction of dependency graph
  • diff command to compare two plans
  • list-bins prints full selector “pkg:type:name”, i.e. includes package name

0.5.0.0

lib:cabal-plan Library

  • New dispCompNameTarget function for pretty-printing CompNames in cabal’s target-selector syntax.
  • Add support for cabal 2.4’s pkg-src package provenience metadata.
  • Add support for cabal 2.4.1’s pkg-cabal-sha256 package description checksum field.

exe:cabal-plan Executable

  • Add support for including package description checksums in fingerprint output
  • Add support for printing flag selection in topo output
  • Fail gracefully in license-report when metadata cannot be found in index

0.4.0.0

lib:cabal-plan Library

  • New SearchPlanJson type to specify strategy for locating plan.json
  • Add SearchPlanJson parameter to findAndDecodePlanJson function and change return type
  • Expose separate findProjectRoot operation

exe:cabal-plan Executable

  • New command license-report (requires Cabal flag license-report to be active)

0.3.0.0

lib:cabal-plan Library

  • Add support for foreign-lib components.
  • Add support for dist-dir plan.json field.
  • Make Sha256 type abstract and add new sha256{To,From}ByteString conversion functions, as well as the new parseSha256 function.
  • Introduce FlagName newtype.
  • Add FromJSONKey/ToJSONKey instances for UnitId, PackageName, and PkgId.

exe:cabal-plan Executable

  • smart completer for list-bin/list-bins pattern
  • new command topo (printing out topographic sorting of install-plan)
  • dot prints component dependency graph. New options:
    • --tred transitive reduction
    • --tred-weights Adjust edge thickness during transitive reduction
    • --path-from pkgA --path-from pkgB Highlight dependency paths from pkgA to pkgB
    • --revdep pkg highlight reverse dependencies of pkg in the install plan

0.2.0.0

  • Add an optional --builddir argument to all commands and to findAndDecodePlanJson function.
  • Add experimental support for underlining.
  • Reimplement CLI with optparse-applicative.
  • Add new sub-command list-bins and change semantics of existing list-bin sub-cmd.

0.1.1.0

  • Add cabal-plan fingerprint command for printing sha256 sums of source tarballs.

0.1.0.0

  • First version. Released on an unsuspecting world.
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