git: ef23f41eb5 - main - porter-handbook: Document recently added CABAL_REVISION knob.

From: Gleb Popov <>
Date: Wed, 23 Nov 2022 11:48:14 UTC
The branch main has been updated by arrowd (ports committer):


commit ef23f41eb565c84fc675bc9dbf1810e51c616799
Author:     Gleb Popov <>
AuthorDate: 2022-11-23 08:43:07 +0000
Commit:     Gleb Popov <>
CommitDate: 2022-11-23 11:48:05 +0000

    porter-handbook: Document recently added CABAL_REVISION knob.
    Reviewed By: #docs, fernape
    Differential Revision:
 documentation/content/en/books/porters-handbook/uses/_index.adoc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/documentation/content/en/books/porters-handbook/uses/_index.adoc b/documentation/content/en/books/porters-handbook/uses/_index.adoc
index 3a05b70c57..dad36f57b2 100644
--- a/documentation/content/en/books/porters-handbook/uses/_index.adoc
+++ b/documentation/content/en/books/porters-handbook/uses/_index.adoc
@@ -199,10 +199,14 @@ This argument is implicitly added if `USE_GITHUB` or `USE_GITLAB` is present.
 The framework provides the following variables:
+Haskell packages hosted on Hackage may have revisions.
+Set this knob to an integer number to pull in revised package description.
 If the software uses Haskell dependencies, list them in this variable.
 Each item should be present on Hackage and be listed in form `packagename-_0.1.2_`.
-Dependencies can have revisions, which are specified after the `_` symbol.
+Dependencies can have revisions too, which are specified after the `_` symbol.
 Automatic generation of the dependency list is supported, see crossref:special[using-cabal,Building Haskell Applications with `cabal`].