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LFortran compiles fpm
LFortran can now compile fpm, the Fortran Package Manager. We opened up an issue for it in April 2025, when we started focusing on it as a priority. We closed it on February 7, 2026. fpm is the most complex project that we now successfully built and run. It is an interesting project: it is not computational, but rather a system project which exercises running other programs, reading environment variables, command-line argument parsing, reading and writing files, directories, parsing enough Fortran to understand dependencies, etc. It uses almost all modern Fortran features: classes, inheritance, allocatable components, constructors, arrays of classes, select type, associate, automatic LHS (left-hand side) reallocation, strings, arrays of strings and it exposed dozens and dozens of bugs and missing features in LFortran. And we have now implemented them all. As a result, LFortran is really close to beta, and we are advancing our progress bar to 9/10.
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