Guy ChronisterandWeijia Wang
397ffc81e6
This refactor performs a mechanical migration of gnuplot to the by-name
layout and updates the derivation to the modern finalAttrs style.
Key changes:
* Move gnuplot from pkgs/tools/graphics/gnuplot/ to pkgs/by-name/gn/gnuplot/
and rename set-gdfontpath-from-fontconfig.sh accordingly.
* Replace the old `rec { ... }` form with `stdenv.mkDerivation (finalAttrs: { ... })`
following current Nixpkgs conventions.
* Remove the unused mkDerivation argument and stop switching the derivation
function based on `withQt`. gnuplot does not require libsForQt5.mkDerivation;
Qt support is handled entirely through inputs and configure flags.
* Replace qttools/qtbase/qtsvg with libsForQt5.qttools/qtbase/qtsvg when
`withQt = true`.
* Convert `${pname}-${version}` to `${finalAttrs.version}` and update
`sha256` → `hash`.
* Add by-name variants gnuplot_qt and gnuplot_aquaterm using override
wrappers.
* Remove the old top-level aliases for gnuplot, gnuplot_qt, and
gnuplot_aquaterm from all-packages.nix; by-name exposure now handles them.
This change is purely structural and does not modify gnuplot’s build
behaviour beyond adopting the standard finalAttrs pattern.
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