29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
35 lines
920 B
Nix
35 lines
920 B
Nix
{ config, lib, pkgs, ... }:
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with lib;
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# unixODBC drivers (this solution is not perfect.. Because the user has to
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# ask the admin to add a driver.. but it's simple and works
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{
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###### interface
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options = {
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environment.unixODBCDrivers = mkOption {
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default = [];
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example = literalExample "map (x : x.ini) (with pkgs.unixODBCDrivers; [ mysql psql psqlng ] )";
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description = ''
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Specifies Unix ODBC drivers to be registered in
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<filename>/etc/odbcinst.ini</filename>. You may also want to
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add <literal>pkgs.unixODBC</literal> to the system path to get
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a command line client to connnect to ODBC databases.
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'';
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};
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};
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###### implementation
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config = mkIf (config.environment.unixODBCDrivers != []) {
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environment.etc."odbcinst.ini".text =
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let inis = config.environment.unixODBCDrivers;
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in pkgs.lib.concatStringsSep "\n" inis;
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};
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}
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