55 lines
2.0 KiB
Markdown
55 lines
2.0 KiB
Markdown
# Tcl {#sec-language-tcl}
|
|
|
|
## User guide {#sec-language-tcl-user-guide}
|
|
|
|
Tcl interpreters are available under the `tcl` and `tcl-X_Y` attributes, where `X_Y` is the Tcl version.
|
|
|
|
Tcl libraries are available in the `tclPackages` attribute set.
|
|
They are only guaranteed to work with the default Tcl version, but will probably also work with others thanks to the [stubs mechanism](https://wiki.tcl-lang.org/page/Stubs).
|
|
|
|
## Packaging guide {#sec-language-tcl-packaging}
|
|
|
|
Tcl packages are typically built with `tclPackages.mkTclDerivation`.
|
|
Tcl dependencies go in `buildInputs`/`nativeBuildInputs`/... like other packages.
|
|
For more complex package definitions, such as packages with mixed languages, use `tcl.tclPackageHook`.
|
|
|
|
Where possible, make sure to enable stubs for maximum compatibility, usually with the `--enable-stubs` configure flag.
|
|
|
|
Here is a simple package example to be called with `tclPackages.callPackage`.
|
|
|
|
```
|
|
{ lib, fetchzip, mkTclDerivation, openssl }:
|
|
|
|
mkTclDerivation rec {
|
|
pname = "tcltls";
|
|
version = "1.7.22";
|
|
|
|
src = fetchzip {
|
|
url = "https://core.tcl-lang.org/tcltls/uv/tcltls-${version}.tar.gz";
|
|
hash = "sha256-TOouWcQc3MNyJtaAGUGbaQoaCWVe6g3BPERct/V65vk=";
|
|
};
|
|
|
|
buildInputs = [ openssl ];
|
|
|
|
configureFlags = [
|
|
"--with-ssl-dir=${openssl.dev}"
|
|
"--enable-stubs"
|
|
];
|
|
|
|
meta = {
|
|
homepage = "https://core.tcl-lang.org/tcltls/index";
|
|
description = "OpenSSL / RSA-bsafe Tcl extension";
|
|
maintainers = [ lib.maintainers.agbrooks ];
|
|
license = lib.licenses.tcltk;
|
|
platforms = lib.platforms.unix;
|
|
};
|
|
}
|
|
```
|
|
|
|
All Tcl libraries are declared in `pkgs/top-level/tcl-packages.nix` and are defined in `pkgs/development/tcl-modules/`.
|
|
If possible, prefer the by-name hierarchy in `pkgs/development/tcl-modules/by-name/`.
|
|
Its use is documented in `pkgs/development/tcl-modules/by-name/README.md`.
|
|
|
|
All Tcl applications reside elsewhere.
|
|
In case a package is used as both a library and an application (for example `expect`), it should be defined in `tcl-packages.nix`, with an alias elsewhere.
|