File headers: use SPDX license identifiers

See T95597

35 files changed, 35 insertions, 468 deletions

diff --git a/amaranth/__init__.py b/amaranth/__init__.py
index 83aaac68..6622c1e4 100644
--- a/amaranth/__init__.py
+++ b/amaranth/__init__.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Amaranth
 
diff --git a/amaranth/animation/frame_current.py b/amaranth/animation/frame_current.py
index 6bea2009..8f0e5cb7 100644
--- a/amaranth/animation/frame_current.py
+++ b/amaranth/animation/frame_current.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Current Frame Slider
 
diff --git a/amaranth/animation/jump_frames.py b/amaranth/animation/jump_frames.py
index fb12cb35..db65709b 100644
--- a/amaranth/animation/jump_frames.py
+++ b/amaranth/animation/jump_frames.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Jump X Frames on Shift Up/Down
 
diff --git a/amaranth/animation/motion_paths.py b/amaranth/animation/motion_paths.py
index 7988b452..a61c7e4e 100644
--- a/amaranth/animation/motion_paths.py
+++ b/amaranth/animation/motion_paths.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Bone Motion Paths:
 
diff --git a/amaranth/animation/timeline_extra_info.py b/amaranth/animation/timeline_extra_info.py
index 0e875b43..4131878c 100644
--- a/amaranth/animation/timeline_extra_info.py
+++ b/amaranth/animation/timeline_extra_info.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Timeline Extra Info
 
diff --git a/amaranth/misc/color_management.py b/amaranth/misc/color_management.py
index 72ad4bb2..743c5625 100644
--- a/amaranth/misc/color_management.py
+++ b/amaranth/misc/color_management.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Color Management Presets
 
diff --git a/amaranth/misc/dupli_group_id.py b/amaranth/misc/dupli_group_id.py
index 05fa7129..c4fa28fe 100644
--- a/amaranth/misc/dupli_group_id.py
+++ b/amaranth/misc/dupli_group_id.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Object ID for Dupli Groups
 Say you have a linked character or asset, you can now set an Object ID for the
diff --git a/amaranth/misc/sequencer_extra_info.py b/amaranth/misc/sequencer_extra_info.py
index 2d5d6b79..93b02733 100644
--- a/amaranth/misc/sequencer_extra_info.py
+++ b/amaranth/misc/sequencer_extra_info.py
@@ -1,29 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Sequencer: Display Image File Name
 
diff --git a/amaranth/misc/toggle_wire.py b/amaranth/misc/toggle_wire.py
index 3d43660d..57ccc253 100644
--- a/amaranth/misc/toggle_wire.py
+++ b/amaranth/misc/toggle_wire.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 import bpy
 
diff --git a/amaranth/modeling/symmetry_tools.py b/amaranth/modeling/symmetry_tools.py
index d23b4fb9..a3e47355 100644
--- a/amaranth/modeling/symmetry_tools.py
+++ b/amaranth/modeling/symmetry_tools.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Symmetry Tools: Find Asymmetric + Make Symmetric (by Sergey Sharybin)
 
diff --git a/amaranth/node_editor/display_image.py b/amaranth/node_editor/display_image.py
index 0dcefca8..380166a9 100644
--- a/amaranth/node_editor/display_image.py
+++ b/amaranth/node_editor/display_image.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Display Active Image Node on Image Editor
 
diff --git a/amaranth/node_editor/id_panel.py b/amaranth/node_editor/id_panel.py
index 09f031da..e3c77985 100644
--- a/amaranth/node_editor/id_panel.py
+++ b/amaranth/node_editor/id_panel.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 """
 Object / Material Indices Panel
diff --git a/amaranth/node_editor/node_shader_extra.py b/amaranth/node_editor/node_shader_extra.py
index 7fbaf225..5719112e 100644
--- a/amaranth/node_editor/node_shader_extra.py
+++ b/amaranth/node_editor/node_shader_extra.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 import bpy
 
 
diff --git a/amaranth/node_editor/node_stats.py b/amaranth/node_editor/node_stats.py
index 796e10dc..001f7461 100644
--- a/amaranth/node_editor/node_stats.py
+++ b/amaranth/node_editor/node_stats.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Nodes Stats
 
diff --git a/amaranth/node_editor/normal_node.py b/amaranth/node_editor/normal_node.py
index fe77856a..6549ec4e 100644
--- a/amaranth/node_editor/normal_node.py
+++ b/amaranth/node_editor/normal_node.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Nodes: XYZ Sliders for Normal Node
 
diff --git a/amaranth/node_editor/simplify_nodes.py b/amaranth/node_editor/simplify_nodes.py
index 71aec24c..5cdc6a78 100644
--- a/amaranth/node_editor/simplify_nodes.py
+++ b/amaranth/node_editor/simplify_nodes.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Nodes Simplify Panel [WIP Feature]
 
diff --git a/amaranth/node_editor/switch_material.py b/amaranth/node_editor/switch_material.py
index d559965b..68e1be9b 100644
--- a/amaranth/node_editor/switch_material.py
+++ b/amaranth/node_editor/switch_material.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Material Selector
 
diff --git a/amaranth/node_editor/templates/__init__.py b/amaranth/node_editor/templates/__init__.py
index 90edac48..33af8dde 100644
--- a/amaranth/node_editor/templates/__init__.py
+++ b/amaranth/node_editor/templates/__init__.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Node Templates - Vignette, Vector Blur
 
diff --git a/amaranth/node_editor/templates/vectorblur.py b/amaranth/node_editor/templates/vectorblur.py
index 2bc01e48..03ca93fc 100644
--- a/amaranth/node_editor/templates/vectorblur.py
+++ b/amaranth/node_editor/templates/vectorblur.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 import bpy
 from mathutils import Vector
diff --git a/amaranth/node_editor/templates/vignette.py b/amaranth/node_editor/templates/vignette.py
index 5e8ce0a4..8bf45622 100644
--- a/amaranth/node_editor/templates/vignette.py
+++ b/amaranth/node_editor/templates/vignette.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 import bpy
 from mathutils import Vector
diff --git a/amaranth/prefs.py b/amaranth/prefs.py
index 3c27c12d..f5938fcf 100644
--- a/amaranth/prefs.py
+++ b/amaranth/prefs.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 import bpy
 from bpy.props import (
diff --git a/amaranth/render/border_camera.py b/amaranth/render/border_camera.py
index 3d286080..03d93e7b 100644
--- a/amaranth/render/border_camera.py
+++ b/amaranth/render/border_camera.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Set Camera Bounds as Render Border
 
diff --git a/amaranth/render/final_resolution.py b/amaranth/render/final_resolution.py
index 953b793f..b1580177 100644
--- a/amaranth/render/final_resolution.py
+++ b/amaranth/render/final_resolution.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 UI: Final Resolution
 
diff --git a/amaranth/render/meshlight_select.py b/amaranth/render/meshlight_select.py
index cad3a95a..b2dea04e 100644
--- a/amaranth/render/meshlight_select.py
+++ b/amaranth/render/meshlight_select.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Select Meshlights
 
diff --git a/amaranth/render/passepartout.py b/amaranth/render/passepartout.py
index 7d65299c..1f44aab6 100644
--- a/amaranth/render/passepartout.py
+++ b/amaranth/render/passepartout.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Passepartout on Specials menu
 
diff --git a/amaranth/render/render_output_z.py b/amaranth/render/render_output_z.py
index 2c1107ed..4e1b3613 100644
--- a/amaranth/render/render_output_z.py
+++ b/amaranth/render/render_output_z.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 EXR Render: Warn when Z not connected
 Display a little warning label when exporting EXR, with Z Buffer enabled, but
diff --git a/amaranth/render/samples_scene.py b/amaranth/render/samples_scene.py
index 0409a771..d14288d3 100644
--- a/amaranth/render/samples_scene.py
+++ b/amaranth/render/samples_scene.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Cycles: Samples per Scene
 
diff --git a/amaranth/scene/current_blend.py b/amaranth/scene/current_blend.py
index e3f4ca91..7ab855c4 100644
--- a/amaranth/scene/current_blend.py
+++ b/amaranth/scene/current_blend.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 File Browser > Go to Current Blend's Folder
 
diff --git a/amaranth/scene/debug.py b/amaranth/scene/debug.py
index 7154a119..38692743 100755
--- a/amaranth/scene/debug.py
+++ b/amaranth/scene/debug.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Scene Debug Panel
 
diff --git a/amaranth/scene/goto_library.py b/amaranth/scene/goto_library.py
index 08f1689c..b1ea9e5b 100644
--- a/amaranth/scene/goto_library.py
+++ b/amaranth/scene/goto_library.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 File Browser: Libraries Bookmark
 
diff --git a/amaranth/scene/material_remove_unassigned.py b/amaranth/scene/material_remove_unassigned.py
index f19bc3d2..af2154d1 100644
--- a/amaranth/scene/material_remove_unassigned.py
+++ b/amaranth/scene/material_remove_unassigned.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 import bpy
 
 
diff --git a/amaranth/scene/refresh.py b/amaranth/scene/refresh.py
index 3ef5e6b7..e03fc9cf 100644
--- a/amaranth/scene/refresh.py
+++ b/amaranth/scene/refresh.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Refresh Scene
 
diff --git a/amaranth/scene/save_reload.py b/amaranth/scene/save_reload.py
index 7b961b64..f3bedb5e 100644
--- a/amaranth/scene/save_reload.py
+++ b/amaranth/scene/save_reload.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Save & Reload File
 
diff --git a/amaranth/scene/stats.py b/amaranth/scene/stats.py
index 10d8be44..71d10741 100644
--- a/amaranth/scene/stats.py
+++ b/amaranth/scene/stats.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 """
 Scene, Cameras, and Meshlights Count
 
diff --git a/amaranth/utils.py b/amaranth/utils.py
index f6367875..b7301d43 100644
--- a/amaranth/utils.py
+++ b/amaranth/utils.py
@@ -1,16 +1,4 @@
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License
-#  as published by the Free Software Foundation; either version 2
-#  of the License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, write to the Free Software Foundation,
-#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# SPDX-License-Identifier: GPL-2.0-or-later
 
 import bpy