cabal-install/Cabal-absolute-datadir.patch

From 1f8f9fd08fb90bd94668ac8a81c94e179fc8ab86 Mon Sep 17 00:00:00 2001
From: Matthew Pickering <matthewtpickering@gmail.com>
Date: Fri, 14 Mar 2025 12:55:51 +0000
Subject: [PATCH] Set <pkgname_datadir> to an absolute path

Ticket #10717 points out that the <pkgname>_datadir environment variable
should be set to an absolute path since the test executables may
change directory during their invocation.

This is easily fixed by using the absoluteWorkingDirLBI
function, which was introduced in 027bddfcdf3ba298376c60be1ccf664ebc394cec,

Fixes #10717
---
 cabal-install/src/Distribution/Client/Run.hs  |  3 ++

Index: cabal-install-3.14.1.1/src/Distribution/Client/Run.hs
===================================================================
--- cabal-install-3.14.1.1.orig/src/Distribution/Client/Run.hs	2001-09-09 01:46:40.000000000 +0000
+++ cabal-install-3.14.1.1/src/Distribution/Client/Run.hs	2025-08-05 12:02:41.575543029 +0000
@@ -35,6 +35,7 @@ import Distribution.Simple.Flag (fromFla
 import Distribution.Simple.LocalBuildInfo
   ( ComponentName (..)
   , LocalBuildInfo (..)
+  , absoluteWorkingDirLBI
   , buildDir
   , depLibraryPaths
   , interpretSymbolicPathLBI
@@ -143,6 +144,7 @@ splitRunArgs verbosity lbi args =
 -- | Run a given executable.
 run :: Verbosity -> LocalBuildInfo -> Executable -> [String] -> IO ()
 run verbosity lbi exe exeArgs = do
+  curDir <- absoluteWorkingDirLBI lbi
   let distPref = fromFlag $ configDistPref $ configFlags lbi
       buildPref = buildDir lbi
       pkg_descr = localPkgDescr lbi
@@ -155,6 +157,7 @@ run verbosity lbi exe exeArgs = do
           , -- Include any build-tool-depends on build tools internal to the current package.
             withPrograms =
               addInternalBuildTools
+                curDir
                 pkg_descr
                 lbi
                 (buildInfo exe)