Add Ubuntu 25.04 (Plucky Puffin) Installer Support

CHANGELOG.md

@@ -0,0 +1,8 @@
+# Changelog
+
+## Ubuntu 25.04 Port (FOSSEE Summer Fellowship 2026)
+
+- Reconstructed and documented 38 atomic bug-fix commits on installers branch.
+- Added Ubuntu 25.04 compatibility across installer flow, NGHDL, dependency fallback logic, snap-based KiCad installation, snap-aware KiCad library paths, and startup path discovery.
+- See Ubuntu-specific details in [Ubuntu/CHANGELOG.md](Ubuntu/CHANGELOG.md).
+- See structured incident details in [Ubuntu/BUG_REPORT.md](Ubuntu/BUG_REPORT.md).

README.md

@@ -15,3 +15,23 @@ It contains all the documentation for packaging eSim for distribution.
 3. Refer the [documentation](Ubuntu/README.md) to package eSim for Ubuntu OS.
 
 4. Refer the [documentation](Windows/README.md) to package eSim for Windows OS.
+
+
+---
+
+# FOSSEE Summer Fellowship 2026 - Ubuntu 25.04 Port
+
+As part of the eSim upgradation task, the installer has been ported to support Ubuntu 25.04. The upstream installer failed due to dependency removals, version mismatches, and strict detection logic.
+
+During debugging in a clean environment, 38 distinct installation blockers were identified and resolved through 38 atomic commits in the installers branch.
+
+## Porting Summary
+- High difficulty (15): dependency chain resolutions (LLVM/GHDL handling, NGHDL sub-installer chain, dynamic path discovery)
+- Medium difficulty (14): PPA management, virtualenv ownership issues, package fallback logic, snap-based KiCad installation
+- Low difficulty (7): regex fixes, syntax-level fixes, and missing assets handling
+
+## Ubuntu 25.04 Documentation
+All Ubuntu 25.04 port documentation is in the Ubuntu directory:
+- [Changelog and Commit Mapping](Ubuntu/CHANGELOG.md)
+- [Detailed Bug Report](Ubuntu/BUG_REPORT.md)
+- [Final Installer Script](Ubuntu/install-eSim-scripts/install-eSim-25.04.sh)