Switch project license from GPL-3.0 to MIT by Copilot · Pull Request #44 · jchristopherson/fplot

Copilot · 2026-10-01T18:07:39Z

Replace the repository’s GPL-3.0 license with MIT and add MIT license headers to all Fortran source files.

License: Replace LICENSE with the standard MIT license; update fpm.toml to declare MIT.
Fortran headers: Add copyright, license, and LICENSE reference to all 138 source files.

! Copyright (c) 2017-2026 Jason Christopherson
! Licensed under the MIT License. See the LICENSE file in the project root.

Co-authored-by: jchristopherson <28952490+jchristopherson@users.noreply.github.com>

jchristopherson

Please expand the license header in each of the Fortran source files similar to the following:

Copyright (c) 2017-2026 Jason Christopherson
SPDX-License-Identifier: MIT

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The Software is provided "as is", without warranty of any kind, express or
implied, including but not limited to the warranties of merchantability,
fitness for a particular purpose and noninfringement.

Copilot

Copilot review overview

🟡 Changes recommended

The Delaunay implementation’s upstream copyright and permission notice must be preserved before relicensing.

Review effort: Balanced
Findings: 3

Open (3)

Preserve upstream notice in repository licensing · New
Retain original authors' MIT notice in duplicated source · New
Preserve upstream copyright notice and identify local modifications · New

What changed in this PR

Switches FPLOT from GPL-3.0 to MIT licensing and applies consistent MIT headers across all 138 Fortran files.

Changes:

Replaces the repository license and updates FPM metadata.
Adds MIT copyright headers to source, documentation, examples, and tests.

File	Description
`LICENSE`	Replaces GPL-3.0 with MIT.
`fpm.toml`	Declares MIT licensing.
`src/delaunay/delaunay.f90`	Adds MIT header.
`src/fplot_arrow.f90`	Adds MIT header.
`src/fplot_colormap.f90`	Adds MIT header.
`src/fplot_colors.f90`	Adds MIT header.
`src/fplot_constants.f90`	Adds MIT header.
`src/fplot_core.f90`	Adds MIT header.
`src/fplot_core_routines.f90`	Adds MIT header.
`src/fplot_delaunay_tri_surface.f90`	Adds MIT header.
`src/fplot_errors.f90`	Adds MIT header.
`src/fplot_filled_plot_data.f90`	Adds MIT header.
`src/fplot_label.f90`	Adds MIT header.
`src/fplot_latex_terminal.f90`	Adds MIT header.
`src/fplot_legend.f90`	Adds MIT header.
`src/fplot_multiplot.f90`	Adds MIT header.
`src/fplot_pdf_terminal.f90`	Adds MIT header.
`src/fplot_plot.f90`	Adds MIT header.
`src/fplot_plot_2d.f90`	Adds MIT header.
`src/fplot_plot_3d.f90`	Adds MIT header.
`src/fplot_plot_axis.f90`	Adds MIT header.
`src/fplot_plot_bar.f90`	Adds MIT header.
`src/fplot_plot_data.f90`	Adds MIT header.
`src/fplot_plot_data_2d.f90`	Adds MIT header.
`src/fplot_plot_data_3d.f90`	Adds MIT header.
`src/fplot_plot_data_bar.f90`	Adds MIT header.
`src/fplot_plot_data_box_whisker.f90`	Adds MIT header.
`src/fplot_plot_data_error_bars.f90`	Adds MIT header.
`src/fplot_plot_data_function.f90`	Adds MIT header.
`src/fplot_plot_data_histogram.f90`	Adds MIT header.
`src/fplot_plot_data_tri_2d.f90`	Adds MIT header.
`src/fplot_plot_object.f90`	Adds MIT header.
`src/fplot_plot_polar.f90`	Adds MIT header.
`src/fplot_png_terminal.f90`	Adds MIT header.
`src/fplot_qt_terminal.f90`	Adds MIT header.
`src/fplot_simplify.f90`	Adds MIT header.
`src/fplot_stats_plots.f90`	Adds MIT header.
`src/fplot_surface_plot.f90`	Adds MIT header.
`src/fplot_surface_plot_data.f90`	Adds MIT header.
`src/fplot_svg_terminal.f90`	Adds MIT header.
`src/fplot_terminal.f90`	Adds MIT header.
`src/fplot_tri_surface_plot_data.f90`	Adds MIT header.
`src/fplot_triangulations_delaunay_2d.f90`	Adds MIT header.
`src/fplot_vector_field_plot_data.f90`	Adds MIT header.
`src/fplot_windows_terminal.f90`	Adds MIT header.
`src/fplot_wxt_terminal.f90`	Adds MIT header.
`test/fplot_3d_test.f90`	Adds MIT header.
`test/fplot_arrow_test.f90`	Adds MIT header.
`test/fplot_colormap_test.f90`	Adds MIT header.
`test/fplot_delaunay_test.f90`	Adds MIT header.
`test/fplot_test.f90`	Adds MIT header.
`examples/arrow_example.f90`	Adds MIT header.
`examples/bar_plot_example.f90`	Adds MIT header.
`examples/box_whisker_example.f90`	Adds MIT header.
`examples/clear_plot_example.f90`	Adds MIT header.
`examples/colored_vector_plot_example.f90`	Adds MIT header.
`examples/correlation_plot_example.f90`	Adds MIT header.
`examples/custom_colormap_example.f90`	Adds MIT header.
`examples/data_dependent_colors_2d.f90`	Adds MIT header.
`examples/data_dependent_colors_3d.f90`	Adds MIT header.
`examples/error_bar_example.f90`	Adds MIT header.
`examples/fill_between_curves_example.f90`	Adds MIT header.
`examples/filled_curve_example.f90`	Adds MIT header.
`examples/function_plot_example.f90`	Adds MIT header.
`examples/generic_2d_plot.f90`	Adds MIT header.
`examples/generic_3d_plot.f90`	Adds MIT header.
`examples/histogram_example.f90`	Adds MIT header.
`examples/impulse_example.f90`	Adds MIT header.
`examples/jitter_plot_example.f90`	Adds MIT header.
`examples/latex_plot_example.f90`	Adds MIT header.
`examples/legend_example.f90`	Adds MIT header.
`examples/log_scaling_example.f90`	Adds MIT header.
`examples/margins_example.f90`	Adds MIT header.
`examples/multiplot_example_1.f90`	Adds MIT header.
`examples/multiplot_example_2.f90`	Adds MIT header.
`examples/multiplot_save_to_file_example.f90`	Adds MIT header.
`examples/pdf_plot_example.f90`	Adds MIT header.
`examples/plot_label_example.f90`	Adds MIT header.
`examples/png_plot_example.f90`	Adds MIT header.
`examples/png_plot_example_2.f90`	Adds MIT header.
`examples/polar_plot_example.f90`	Adds MIT header.
`examples/polar_plot_simplified_example.f90`	Adds MIT header.
`examples/save_to_file_example.f90`	Adds MIT header.
`examples/secondary_y_axis_example.f90`	Adds MIT header.
`examples/square_axis_example.f90`	Adds MIT header.
`examples/surface_plot_example.f90`	Adds MIT header.
`examples/surface_plot_example_2.f90`	Adds MIT header.
`examples/svg_plot_example.f90`	Adds MIT header.
`examples/triangle_mesh_surface_example.f90`	Adds MIT header.
`examples/triangulation_2d_example.f90`	Adds MIT header.
`examples/triangulation_2d_location_example.f90`	Adds MIT header.
`examples/variable_point_size_2d_example.f90`	Adds MIT header.
`examples/variable_point_size_3d_example.f90`	Adds MIT header.
`examples/vector_plot_example.f90`	Adds MIT header.
`examples/wireframe_surface_example.f90`	Adds MIT header.
`examples/zero_axis_example.f90`	Adds MIT header.
`doc/src/delaunay.f90`	Adds MIT header.
`doc/src/fplot_arrow.f90`	Adds MIT header.
`doc/src/fplot_colormap.f90`	Adds MIT header.
`doc/src/fplot_colors.f90`	Adds MIT header.
`doc/src/fplot_constants.f90`	Adds MIT header.
`doc/src/fplot_core.f90`	Adds MIT header.
`doc/src/fplot_core_routines.f90`	Adds MIT header.
`doc/src/fplot_delaunay_tri_surface.f90`	Adds MIT header.
`doc/src/fplot_errors.f90`	Adds MIT header.
`doc/src/fplot_filled_plot_data.f90`	Adds MIT header.
`doc/src/fplot_label.f90`	Adds MIT header.
`doc/src/fplot_latex_terminal.f90`	Adds MIT header.
`doc/src/fplot_legend.f90`	Adds MIT header.
`doc/src/fplot_multiplot.f90`	Adds MIT header.
`doc/src/fplot_pdf_terminal.f90`	Adds MIT header.
`doc/src/fplot_plot.f90`	Adds MIT header.
`doc/src/fplot_plot_2d.f90`	Adds MIT header.
`doc/src/fplot_plot_3d.f90`	Adds MIT header.
`doc/src/fplot_plot_axis.f90`	Adds MIT header.
`doc/src/fplot_plot_bar.f90`	Adds MIT header.
`doc/src/fplot_plot_data.f90`	Adds MIT header.
`doc/src/fplot_plot_data_2d.f90`	Adds MIT header.
`doc/src/fplot_plot_data_3d.f90`	Adds MIT header.
`doc/src/fplot_plot_data_bar.f90`	Adds MIT header.
`doc/src/fplot_plot_data_box_whisker.f90`	Adds MIT header.
`doc/src/fplot_plot_data_error_bars.f90`	Adds MIT header.
`doc/src/fplot_plot_data_function.f90`	Adds MIT header.
`doc/src/fplot_plot_data_histogram.f90`	Adds MIT header.
`doc/src/fplot_plot_data_tri_2d.f90`	Adds MIT header.
`doc/src/fplot_plot_object.f90`	Adds MIT header.
`doc/src/fplot_plot_polar.f90`	Adds MIT header.
`doc/src/fplot_png_terminal.f90`	Adds MIT header.
`doc/src/fplot_qt_terminal.f90`	Adds MIT header.
`doc/src/fplot_simplify.f90`	Adds MIT header.
`doc/src/fplot_stats_plots.f90`	Adds MIT header.
`doc/src/fplot_surface_plot.f90`	Adds MIT header.
`doc/src/fplot_surface_plot_data.f90`	Adds MIT header.
`doc/src/fplot_svg_terminal.f90`	Adds MIT header.
`doc/src/fplot_terminal.f90`	Adds MIT header.
`doc/src/fplot_tri_surface_plot_data.f90`	Adds MIT header.
`doc/src/fplot_triangulations_delaunay_2d.f90`	Adds MIT header.
`doc/src/fplot_vector_field_plot_data.f90`	Adds MIT header.
`doc/src/fplot_windows_terminal.f90`	Adds MIT header.
`doc/src/fplot_wxt_terminal.f90`	Adds MIT header.

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Copilot · 2026-10-01T19:30:28Z

-<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+MIT License
+
+Copyright (c) 2017-2026 Jason Christopherson


Added the GEOMPACK attribution to LICENSE alongside the MIT terms. Commit: a6e7104.

Copilot · 2026-10-01T19:33:54Z

+! Copyright (c) 2017-2026 Jason Christopherson
+! Licensed under the MIT License. See the LICENSE file in the project root.


Updated the documentation source header to distinguish local modifications from GEOMPACK attribution and preserve the upstream MIT statement. Commit: 3a34fd4.

Updated the documentation copy to distinguish local modifications and preserve the GEOMPACK author and MIT attribution. Commit: 3a34fd4.

Copilot · 2026-10-01T18:30:43Z

+! Copyright (c) 2017-2026 Jason Christopherson
+! Licensed under the MIT License. See the LICENSE file in the project root.


Updated the source header to distinguish local modifications and retain GEOMPACK authorship and upstream MIT attribution. Commit: c2b76cd.

Co-authored-by: jchristopherson <28952490+jchristopherson@users.noreply.github.com>

Initial plan

f239bf7

Copilot AI assigned Copilot and jchristopherson Oct 1, 2026

Copilot started work on behalf of jchristopherson October 1, 2026 18:08 View session

Switch project licensing to MIT

07da947

Co-authored-by: jchristopherson <28952490+jchristopherson@users.noreply.github.com>

Copilot AI changed the title ~~[WIP] Switch repository license from GPL-3.0 to MIT~~ Switch project license from GPL-3.0 to MIT Oct 1, 2026

Copilot AI requested a review from jchristopherson October 1, 2026 18:11

Copilot finished work on behalf of jchristopherson October 1, 2026 18:12

jchristopherson requested changes Oct 1, 2026

View reviewed changes

Copilot started work on behalf of jchristopherson October 1, 2026 18:13 View session

Copilot finished work on behalf of jchristopherson October 1, 2026 18:14

Copilot AI requested a review from jchristopherson October 1, 2026 18:14

jchristopherson requested a balanced review from Copilot October 1, 2026 18:17

Copilot started reviewing on behalf of jchristopherson October 1, 2026 18:17 View session

Copilot AI reviewed Oct 1, 2026

View reviewed changes

Copilot started work on behalf of jchristopherson October 1, 2026 18:25 View session

Preserve GEOMPACK attribution in source header

c2b76cd

Co-authored-by: jchristopherson <28952490+jchristopherson@users.noreply.github.com>

Copilot finished work on behalf of jchristopherson October 1, 2026 18:31

Copilot started work on behalf of jchristopherson October 1, 2026 19:28 View session

Preserve GEOMPACK license attribution

a6e7104

Co-authored-by: jchristopherson <28952490+jchristopherson@users.noreply.github.com>

Copilot finished work on behalf of jchristopherson October 1, 2026 19:30

Copilot started work on behalf of jchristopherson October 1, 2026 19:33 View session

Preserve GEOMPACK notice in documentation source

3a34fd4

Co-authored-by: jchristopherson <28952490+jchristopherson@users.noreply.github.com>

Copilot finished work on behalf of jchristopherson October 1, 2026 19:34

jchristopherson approved these changes Oct 1, 2026

View reviewed changes

jchristopherson marked this pull request as ready for review October 1, 2026 19:44

jchristopherson added 2 commits October 1, 2026 14:45

Bump version from 1.11.0 to 1.12.0

1dd3b09

Bump project version to 1.12.0

3a420ec

jchristopherson merged commit 4c916ed into master Oct 1, 2026
11 checks passed

jchristopherson deleted the copilot/switch-to-mit-license branch October 1, 2026 19:55

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Switch project license from GPL-3.0 to MIT - #44

Switch project license from GPL-3.0 to MIT#44
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		! Copyright (c) 2017-2026 Jason Christopherson
		! Licensed under the MIT License. See the LICENSE file in the project root.

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Copilot review overview

🟡 Changes recommended

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Copilot AI commented Oct 1, 2026 •

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