Installation guide - replace curly bracket with parantheses

[smollerNV]

To correctly set the path for the environment variable, the pwk command must be enclosed in parantheses rather than curly brackets.

Type of change

• Documentation update

[greptile-apps]

Greptile Summary

This PR fixes a bash syntax bug in the source installation guide. The export ISAACSIM_PATH line previously used "${pwd}/_build/linux-x86_64/release", which performs variable expansion on a variable named pwd (which is empty by default), resulting in a broken path. The fix correctly uses "$(pwd)/_build/linux-x86_64/release", which performs command substitution — executing the pwd command to obtain the current working directory.

• Fixes ${pwd} → $(pwd) on the ISAACSIM_PATH export line in the Linux tab of the installation guide
• The Windows equivalent (%cd%) in the same file was already correct and is unchanged
• The fix is accurate and matches the intended behavior described in the PR

Confidence Score: 5/5

• This PR is safe to merge — it is a correct, minimal documentation fix with no risk.
• The change is a single-line correction of a bash syntax error in a .rst documentation file. It introduces no logic changes, no new dependencies, and the fix ($(pwd) vs ${pwd}) is unambiguously correct for bash command substitution.
• No files require special attention.

Important Files Changed

Filename	Overview
docs/source/setup/installation/source_installation.rst	Corrects bash command substitution syntax from ${pwd} (variable expansion) to $(pwd) (command substitution) when setting ISAACSIM_PATH.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A["User runs: export ISAACSIM_PATH=..."] --> B{Syntax used}
    B -- "Before: \${pwd}" --> C["Shell looks up variable 'pwd'\n(empty string by default)"]
    C --> D["ISAACSIM_PATH = '/_build/linux-x86_64/release'\n❌ Broken path"]
    B -- "After: \$(pwd)" --> E["Shell executes 'pwd' command\nreturns current directory"]
    E --> F["ISAACSIM_PATH = '/home/user/isaac-sim/_build/linux-x86_64/release'\n✅ Correct path"]

Loading

_{Last reviewed commit: bc41ffc}

[myurasov-nv]

@smollerNV I think it makes more sense to add this to develop branch.

[AntoineRichard]

Hi @smollerNV — thanks for putting this one up! 🙏

We're doing a cleanup pass over the Isaac Lab PR backlog, which had grown past 400 open pull requests, and we're closing out the ones that have gone quiet so the queue is reviewable again.

Why this PR is being closed: Here is exactly what we found on this PR when we reviewed the backlog:

Opened	2026-03-17 (about 5 months ago)
Last commit on the branch	2026-03-17
Last activity from the author	about 5 months ago
Target branch	develop
Review status	Never reviewed by a maintainer — nobody on the team got to it. Sorry about that.
Merge status	Unknown
Size	4 commit(s), 15 file(s) changed, +251 / -134

It was picked up by the sweep because it has been open for about 5 months. It was then put in the "close" bucket because the author has been silent for about 5 months — which is the signal we used to tell apart pull requests that are still being worked on from ones that have genuinely been set aside.

We deliberately did not close pull requests that were approved and ready to land, or that were small and clearly still fixing a live bug — there were 27 of those, and we are merging them rather than closing them.

No judgement on the change itself — this is purely backlog hygiene.

If this is still wanted, please reopen it or re-submit against develop. 💚

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🤖 This comment was drafted with AI assistance as part of a maintainer-led sweep of the Isaac Lab pull request backlog. A maintainer is behind this cleanup — but if this closure looks wrong, it may well be, so please push back and we'll take another look.