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home-manager/modules/programs/pandoc.nix

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{ config, lib, pkgs, ... }:
let
cfg = config.programs.pandoc;
inherit (lib) literalExpression mkEnableOption mkIf mkOption types;
jsonFormat = pkgs.formats.json { };
makeTemplateFile = name: file:
lib.nameValuePair "pandoc/templates/${name}" { source = file; };
getFileName = file:
# This is actually safe here, since it is just a file name
builtins.unsafeDiscardStringContext (baseNameOf file);
makeCslFile = file:
lib.nameValuePair "pandoc/csl/${getFileName file}" { source = file; };
in {
meta.maintainers = [ lib.maintainers.kirelagin ];
options.programs.pandoc = {
enable = mkEnableOption "pandoc";
package = mkOption {
type = types.package;
default = pkgs.pandoc;
defaultText = literalExpression "pkgs.pandoc";
description = "The pandoc package to use.";
};
# We wrap the executable to pass some arguments
finalPackage = mkOption {
type = types.package;
readOnly = true;
description = "Resulting package.";
};
defaults = mkOption {
type = jsonFormat.type;
default = { };
example = literalExpression ''
{
metadata = {
author = "John Doe";
};
pdf-engine = "xelatex";
citeproc = true;
}
'';
description = ''
Options to set by default.
These will be converted to JSON and written to a defaults
file (see Default files in pandoc documentation).
'';
};
defaultsFile = mkOption {
type = types.path;
readOnly = true;
description = "Resulting defaults file.";
};
templates = mkOption {
type = types.attrsOf types.path;
default = { };
example = literalExpression ''
{
"default.latex" = path/to/your/template;
}
'';
description = "Custom templates.";
};
citationStyles = mkOption {
type = types.listOf types.path;
default = [ ];
example = literalExpression "[ path/to/file.csl ]";
description = "List of .csl files to install.";
};
};
config = mkIf cfg.enable {
programs.pandoc = {
defaultsFile = jsonFormat.generate "hm.json" cfg.defaults;
finalPackage = pkgs.symlinkJoin {
name = "pandoc-with-defaults";
paths = [ cfg.package ];
nativeBuildInputs = [ pkgs.makeWrapper ];
postBuild = ''
wrapProgram "$out/bin/pandoc" \
--add-flags '--defaults "${cfg.defaultsFile}"'
'';
};
};
home.packages = [ cfg.finalPackage ];
xdg.dataFile = lib.mapAttrs' makeTemplateFile cfg.templates
// lib.listToAttrs (map makeCslFile cfg.citationStyles);
};
}