Bug 29739 - Unable to override MSBuildExtensionsPath
Summary: Unable to override MSBuildExtensionsPath
Status: NEW
Alias: None
Product: Tools
Classification: Mono
Component: xbuild ()
Version: unspecified
Hardware: PC Linux
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2015-05-05 06:10 UTC by obadz
Modified: 2015-05-05 06:10 UTC (History)
1 user (show)

Is this bug a regression?: ---
Last known good build:

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Description obadz 2015-05-05 06:10:09 UTC
On NixOS, Mono and the F# compilers live in their own, immutable, directories.  There exists a directory that is created, using symbolic link, that is the union of the two folders.

However, xbuild does not let me override MSBuildExtensionsPath to that folder (or any other value for that matter):

export MSBuildExtensionsPath=/run/current-system/sw/lib/mono/xbuild
xbuild /p:MSBuildExtensionsPath=/run/current-system/sw/lib/mono/xbuild /v:diag


MSBuildExtensionsPath = /nix/store/fjhziv1gppqk40z4h19m149sbga1n20a-mono-4.0.1/lib/mono/xbuild
MSBuildExtensionsPath32 = /nix/store/fjhziv1gppqk40z4h19m149sbga1n20a-mono-4.0.1/lib/mono/xbuild
MSBuildExtensionsPath64 = /nix/store/fjhziv1gppqk40z4h19m149sbga1n20a-mono-4.0.1/lib/mono/xbuild

Since the F# targets aren't available in the Mono folder, this makes it basically impossible to build any F# projects on NixOS without hacking the fsproj files.

Expected behavior: we should be able to override MSBuildExtensionsPath via both the environment variable and the /p command line arg.