99 lines
		
	
	
		
			2.5 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			99 lines
		
	
	
		
			2.5 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, lib, pkgs, utils, ... }:
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let
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  cfg = config.virtualisation.podman;
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  inherit (lib) mkOption types;
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  podmanPackage = (pkgs.podman.override { inherit (cfg) extraPackages; });
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  # Provides a fake "docker" binary mapping to podman
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  dockerCompat = pkgs.runCommandNoCC "${podmanPackage.pname}-docker-compat-${podmanPackage.version}" {
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    outputs = [ "out" "man" ];
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    inherit (podmanPackage) meta;
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  } ''
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    mkdir -p $out/bin
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    ln -s ${podmanPackage}/bin/podman $out/bin/docker
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    mkdir -p $man/share/man/man1
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    for f in ${podmanPackage.man}/share/man/man1/*; do
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      basename=$(basename $f | sed s/podman/docker/g)
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      ln -s $f $man/share/man/man1/$basename
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    done
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  '';
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in
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{
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  imports = [
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    (lib.mkRenamedOptionModule [ "virtualisation" "podman" "libpod" ] [ "virtualisation" "containers" "containersConf" ])
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  ];
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  meta = {
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    maintainers = lib.teams.podman.members;
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  };
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  options.virtualisation.podman = {
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    enable =
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      mkOption {
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        type = types.bool;
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        default = false;
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        description = ''
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          This option enables Podman, a daemonless container engine for
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          developing, managing, and running OCI Containers on your Linux System.
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          It is a drop-in replacement for the <command>docker</command> command.
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        '';
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      };
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    dockerCompat = mkOption {
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      type = types.bool;
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      default = false;
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      description = ''
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        Create an alias mapping <command>docker</command> to <command>podman</command>.
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      '';
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    };
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    extraPackages = mkOption {
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      type = with types; listOf package;
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      default = [ ];
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      example = lib.literalExample ''
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        [
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          pkgs.gvisor
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        ]
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      '';
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      description = ''
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        Extra packages to be installed in the Podman wrapper.
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      '';
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    };
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    package = lib.mkOption {
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      type = types.package;
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      default = podmanPackage;
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      internal = true;
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      description = ''
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        The final Podman package (including extra packages).
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      '';
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    };
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  };
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  config = lib.mkIf cfg.enable {
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    environment.systemPackages = [ cfg.package ]
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      ++ lib.optional cfg.dockerCompat dockerCompat;
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    environment.etc."cni/net.d/87-podman-bridge.conflist".source = utils.copyFile "${pkgs.podman-unwrapped.src}/cni/87-podman-bridge.conflist";
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    # Enable common /etc/containers configuration
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    virtualisation.containers.enable = true;
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    assertions = [{
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      assertion = cfg.dockerCompat -> !config.virtualisation.docker.enable;
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      message = "Option dockerCompat conflicts with docker";
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    }];
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  };
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}
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