Qt: Difference between revisions
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{{warning|With the deprecation of <code>qt5.full</code> & <code>qt6.full</code>, for 25.11 and up (see [https://github.com/NixOS/nixpkgs/blob/32b61ba4d9088ef926dd27065daad604ca6b58aa/pkgs/development/libraries/qt-6/default.nix#L152 change]) this recommendation is outdated. For now please primarily refer to the [[#Explicit Dependencies|Explicit Dependencies]] Section below.}} | {{warning|With the deprecation of <code>qt5.full</code> & <code>qt6.full</code>, for 25.11 and up (see [https://github.com/NixOS/nixpkgs/blob/32b61ba4d9088ef926dd27065daad604ca6b58aa/pkgs/development/libraries/qt-6/default.nix#L152 change]) this recommendation is outdated. For now please primarily refer to the [[#Explicit Dependencies|Explicit Dependencies]] Section below.}} | ||
To develop Qt applications in NixOS you may use nix-shell or direnv. | |||
For using nix-shell just run this command in the terminal: | For using nix-shell just run this command in the terminal: | ||
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For using direnv, create a '''shell.nix''' file in the root of your project and paste these lines into it: | For using direnv, create a '''shell.nix''' file in the root of your project and paste these lines into it: | ||
< | <syntaxhighlight lang="nix"># shell.nix | ||
# shell.nix | |||
{ pkgs ? import <nixpkgs> {} }: | { pkgs ? import <nixpkgs> {} }: | ||
pkgs.mkShell { | pkgs.mkShell { | ||
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pkgs.qtcreator | pkgs.qtcreator | ||
]; | ]; | ||
} | }</syntaxhighlight> | ||
</ | |||
Also create '''.envrc''' file and paste: <code>use_nix</code> into it. | Also, create '''.envrc''' file and paste: <code>use_nix</code> into it. | ||
=== Explicit Dependencies === | === Explicit Dependencies === | ||
If fetching the entirety of <code>pkgs.qt6.full</code> is not appealing and you know which parts of Qt you need, your first instinct might be adding something like <code>pkgs.qt6.qtdeclarative</code> for creating QML-based Qt programs to <code>buildInputs</code>, '''however''' that will not work and you will get compile errors for missing libraries. <code>pkgs.qt6.full</code> is actually [https://github.com/NixOS/nixpkgs/blob/nixos-24.11/pkgs/development/libraries/qt-6/default.nix#L94-L144 creating an environment that contains all Qt libraries] that allows <code>qmake</code> and tools to find those libraries, so you must do the same and <code>pkgs.qt6.env</code> will help make one. For example: | |||
<syntaxhighlight lang="nix"> | <syntaxhighlight lang="nix"># shell.nix | ||
# shell.nix | |||
{ pkgs ? import <nixpkgs> {} }: | { pkgs ? import <nixpkgs> {} }: | ||
let | let | ||
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pkgs.qtcreator | pkgs.qtcreator | ||
]; | ]; | ||
} | }</syntaxhighlight> | ||
</syntaxhighlight> | |||
== Packaging == | == Packaging == | ||
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For actual python applications, you may also use something like that (to test) : | For actual python applications, you may also use something like that (to test) : | ||
<syntaxHighlight> | <syntaxHighlight lang=nix> | ||
python3.pkgs.buildPythonApplication { | python3.pkgs.buildPythonApplication { | ||
pname = "blabla"; | pname = "blabla"; | ||