#2190: IDEasy destroys python installation

[vivu001]

This PR fixes #2190

Implemented changes:

• Added missing-version-file recovery for preserved local tools.
• Restored the version marker instead of reinstalling Python.
• Kept the existing Python installation intact.

---

Testing instructions

1. Run ./build-local-dev.sh to build the native image.
2. If Python is not already installed, run ide install python once (or Spyder) and delete the file $[IDE_HOME]/software/python/.ide.software.version.
3. Run command

ide install python

Result:

$ ide install python
Tool python is missing version file in C:\Users\xxx\projects\IDEasy\software\python\.ide.software.version
No CVEs found for version 0.12.0 of tool uv.
Tool python is missing version file in C:\Users\xxx\projects\IDEasy\software\python\.ide.software.version
Found 1 CVE(s) for version 3.14.6 of tool python:
CVE-2026-15308 with severity 7.5 and affected versions: [(,3.15.0)]
https://nvd.nist.gov/vuln/detail/CVE-2026-15308
Could not find any other version resolving your CVEs.
Please keep attention to this tool and consider updating as soon as security fixes are available.
Please note that by selecting an unsafe version to install, you accept the risk to be attacked.
Which version do you want to install?
Which version do you want to install?
Option 1: current (3.14.6 - unsafe)

No CVEs found for version 0.12.0 of tool uv.
Version 0.12.0 of tool uv is already installed
Version file missing at C:\Users\xxx\projects\IDEasy\software\python\.ide.software.version - restoring it for tool python
Successfully installed python in version 3.14.6 at C:\Users\xxx\projects\IDEasy\software\python

4. Confirm that IDEasy restored $IDE_HOME/software/python/.ide.software.version.

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Checklist for this PR

Make sure everything is checked before merging this PR. For further info please also see
our DoD.

• When running mvn clean test locally all tests pass and build is successful
• PR title is of the form #«issue-id»: «brief summary» (e.g. #921: fixed setup.bat). If no issue ID exists, title only.
• PR top-level comment summarizes what has been done and contains link to addressed issue(s)
• PR and issue(s) have suitable labels
• Issue is set to In Progress and assigned to you or there is no issue (might happen for very small PRs)
• You followed all coding conventions
• You have added the issue implemented by your PR in CHANGELOG.adoc unless issue is labeled
  with internal
• You have formulated clear instructions on how to test your contribution under "Testing instructions"

[coveralls]

Coverage Report for CI Build 30344918220

Coverage increased (+0.03%) to 72.628%

Details

• Coverage increased (+0.03%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 5 coverage regressions across 2 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

5 previously-covered lines in 2 files lost coverage.

File	Lines Losing Coverage	Coverage
com/devonfw/tools/ide/tool/python/Python.java	4	84.48%
com/devonfw/tools/ide/version/VersionSegment.java	1	90.55%

---

Coverage Stats

Relevant Lines:	17009
Covered Lines:	12879
Line Coverage:	75.72%
Relevant Branches:	7611
Covered Branches:	5002
Branch Coverage:	65.72%
Branches in Coverage %:	Yes
Coverage Strength:	3.21 hits per line

---

💛 - Coveralls

[hohwille]

Since this is still in team-review, I should actually be patient but since I already had a look.
The bug comes from this location:

IDEasy/cli/src/main/java/com/devonfw/tools/ide/tool/LocalToolCommandlet.java

Lines 197 to 200 in c6fcf9b

	} else if (!isIgnoreMissingSoftwareVersionFile()) {
	LOG.warn("Deleting corrupted installation at {}", installationPath);
	fileAccess.delete(installationPath);
	}

(you can easily use the GitHub search to find such code location from the log message).
You are not fixing this in your current PR.

[vivu001]

Since this is still in team-review, I should actually be patient but since I already had a look. The bug comes from this location:

IDEasy/cli/src/main/java/com/devonfw/tools/ide/tool/LocalToolCommandlet.java

Lines 197 to 200 in c6fcf9b

	} else if (!isIgnoreMissingSoftwareVersionFile()) {
	LOG.warn("Deleting corrupted installation at {}", installationPath);
	fileAccess.delete(installationPath);
	}

(you can easily use the GitHub search to find such code location from the log message).
You are not fixing this in your current PR.

@hohwille Thanks for the review. I investigated your suggestion, identified the root cause, and fixed the issue in the latest commit. I've also updated the problem analysis and the testing instructions above.

Please take another look and let me know your feedback. Sorry for the delayed update, and thanks again!