Add docker-compose podman compat

users/modules/podman/default.nix

@@ -3,5 +3,6 @@
     ./podman.nix
     ./containers.nix
     ./podman-dnsname.nix
+    ./docker-compat.nix
   ];
 }

users/modules/podman/docker-compat.nix

@@ -0,0 +1,65 @@
+{ config, lib, pkgs, ... }:
+let
+  # Provides a fake "docker" binary mapping to podman
+  cfg = config.services.podman;
+  podmanPackage = cfg.package;
+  docker_host = "unix:///run/user/$UID/podman/podman.sock";
+
+  fakeDockerBinary = pkgs.runCommandNoCC "${podmanPackage.pname}-docker-compat-${podmanPackage.version}"
+    {
+      outputs = [ "out" "man" ];
+      inherit (podmanPackage) meta;
+    } ''
+    mkdir -p $out/bin
+    ln -s ${podmanPackage}/bin/podman $out/bin/docker
+
+    mkdir -p $man/share/man/man1
+    for f in ${podmanPackage.man}/share/man/man1/*; do
+      basename=$(basename $f | sed s/podman/docker/g)
+      ln -s $f $man/share/man/man1/$basename
+    done
+  '';
+  dockerComposeCompat = pkgs.runCommandNoCC "docker-compose-podman-compat"
+    {
+      buildInputs = [ pkgs.makeWrapper ];
+    } ''
+        mkdir -p $out/bin
+        makeWrapper '${pkgs.docker-compose_2}/libexec/docker/cli-plugins/docker-compose' "$out/bin/docker-compose" \
+    --set-default "DOCKER_HOST" 'unix:///run/user/$UID/podman/podman.sock' \
+    --set-default DOCKER_BUILDKIT 0
+  '';
+in
+with lib; {
+  options.services.podman = {
+    dockerCompat =
+      {
+        fakeDockerBinary.enable = mkEnableOption {
+          description = ''
+            Create an alias mapping <command>docker</command> to <command>podman</command>.
+          '';
+        };
+        dockerSocket.enable = mkEnableOption {
+          description = ''
+            Set the DOCKER_HOST environment variable to make docker tools use the podman docker
+          '';
+        };
+        dockerCompose.enable = mkEnableOption {
+          description = ''
+            Install a docker-compose binary that uses the podman socket
+          '';
+        };
+      };
+  };
+  config = lib.mkIf cfg.enable (lib.mkMerge [
+    (lib.mkIf cfg.dockerCompat.fakeDockerBinary.enable {
+      home.packages = [ fakeDockerBinary ];
+    })
+    (lib.mkIf cfg.dockerCompat.dockerCompose.enable {
+      home.packages = [ dockerComposeCompat ];
+    })
+    (lib.mkIf cfg.dockerCompat.dockerSocket.enable {
+      home.sessionVariables."DOCKER_HOST" = "unix:///run/user/$UID/podman/podman.sock";
+    })
+
+  ]);
+}

users/modules/podman/podman.nix

@@ -8,22 +8,6 @@ let
 
   podmanPackage = (pkgs.podman.override { inherit (cfg) extraPackages; });
 
-  # Provides a fake "docker" binary mapping to podman
-  dockerCompat = pkgs.runCommandNoCC "${podmanPackage.pname}-docker-compat-${podmanPackage.version}"
-    {
-      outputs = [ "out" "man" ];
-      inherit (podmanPackage) meta;
-    } ''
-    mkdir -p $out/bin
-    ln -s ${podmanPackage}/bin/podman $out/bin/docker
-
-    mkdir -p $man/share/man/man1
-    for f in ${podmanPackage.man}/share/man/man1/*; do
-      basename=$(basename $f | sed s/podman/docker/g)
-      ln -s $f $man/share/man/man1/$basename
-    done
-  '';
-
   net-conflist = pkgs.runCommand "87-podman-bridge.conflist"
     {
       nativeBuildInputs = [ pkgs.jq ];
@@ -64,25 +48,6 @@ in
         '';
       };
 
-    dockerSocket.enable = mkOption {
-      type = types.bool;
-      default = false;
-      description = ''
-        Make the Podman socket available in place of the Docker socket, so
-        Docker tools can find the Podman socket.
-
-        Podman implements the Docker API.
-      '';
-    };
-
-    dockerCompat = mkOption {
-      type = types.bool;
-      default = false;
-      description = ''
-        Create an alias mapping <command>docker</command> to <command>podman</command>.
-      '';
-    };
-
     enableNvidia = mkOption {
       type = types.bool;
       default = false;
@@ -123,11 +88,9 @@ in
 
   };
 
-  config = lib.mkIf cfg.enable (lib.mkMerge [
+  config = lib.mkIf cfg.enable
     {
-      home.packages = [ cfg.package ]
-        ++ lib.optional cfg.dockerCompat dockerCompat;
-
+      home.packages = [ cfg.package ];
       xdg.configFile."cni/net.d/87-podman-bridge.conflist".source = net-conflist;
 
       virtualisation.containers = {
@@ -173,11 +136,6 @@ in
           };
           Install.WantedBy = [ "sockets.target" ];
         };
-
       };
-    }
-    (lib.mkIf cfg.dockerSocket.enable {
-      home.sessionVariables."DOCKER_HOST" = "unix:///run/user/$UID/podman/podman.sock";
-    })
-  ]);
+    };
 }

users/profiles/podman/default.nix

@@ -2,5 +2,8 @@
 {
   services.podman.enable = true;
   services.podman.defaultNetwork.dnsname.enable = true;
-  services.podman.dockerSocket.enable = true;
+  services.podman.dockerCompat = {
+    dockerSocket.enable = true;
+    dockerCompose.enable = true;
+  };
 }