Set Path in environment Variables

Cran0g · 16th May 2022, 17:33

Hi folks,

New to NSIS. I have been able to ceate an installer that copies a bunch of files into a detination forlder and creates the uninstaller. The usual stuff.

But what I need to do is to append a path name to the PATH environment and I'm have no joy. Can anyone help me here?

Many thanks.

Cran0g

Anders · 18th May 2022, 12:42

https://nsis.sourceforge.io/EnVar_plug-in

Path is a limited shared resource, avoid bloating it if at all possible.

Cran0g · 18th May 2022, 19:35

Hi, Thanks for the reply. I had actually added this plugin to my NSIS installation and run the sample program. All works just fine, so I know that the installation is good. However, I cannot see, from the examples in that file how to append a new path to the existing environment variable "Path".

It must be possible, because a key feature of installers is to set the path to the newly installed path and then advise the user to reboot.

How is this done in NSIS. Is it even possible?

Anders · 19th May 2022, 03:15

EnVar::AddValue "PATH" "$InstDir\foo\bar"
Pop $0

Cran0g · 19th May 2022, 12:26

Hi Anders,

That did it. Many thanks!

16th May 2022, 17:33	#1
Cran0g Junior Member Join Date: May 2022 Posts: 8	Set Path in environment Variables Hi folks, New to NSIS. I have been able to ceate an installer that copies a bunch of files into a detination forlder and creates the uninstaller. The usual stuff. But what I need to do is to append a path name to the PATH environment and I'm have no joy. Can anyone help me here? Many thanks. Cran0g

18th May 2022, 12:42	#2
Anders Moderator Join Date: Jun 2002 Location: ${NSISDIR} Posts: 5,505	https://nsis.sourceforge.io/EnVar_plug-in Path is a limited shared resource, avoid bloating it if at all possible. IntOp $PostCount $PostCount + 1

18th May 2022, 19:35	#3
Cran0g Junior Member Join Date: May 2022 Posts: 8	Adding to the Path Hi, Thanks for the reply. I had actually added this plugin to my NSIS installation and run the sample program. All works just fine, so I know that the installation is good. However, I cannot see, from the examples in that file how to append a new path to the existing environment variable "Path". It must be possible, because a key feature of installers is to set the path to the newly installed path and then advise the user to reboot. How is this done in NSIS. Is it even possible?

19th May 2022, 03:15	#4
Anders Moderator Join Date: Jun 2002 Location: ${NSISDIR} Posts: 5,505	EnVar::AddValue "PATH" "$InstDir\foo\bar" Pop $0 IntOp $PostCount $PostCount + 1

19th May 2022, 12:26	#5
Cran0g Junior Member Join Date: May 2022 Posts: 8	Adding to the Path Hi Anders, That did it. Many thanks!

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