chore: code cleanup

More usage of slices package, less usage of package sort.

Signed-off-by: Dmitriy Matrenichev <dmitry.matrenichev@siderolabs.com>

cmd/talosctl/cmd/mgmt/cluster/create.go

@@ -837,7 +837,7 @@ func create(ctx context.Context) error {
 		types := []machine.Type{machine.TypeControlPlane, machine.TypeWorker}
 
 		if withInitNode {
-			types = append([]machine.Type{machine.TypeInit}, types...)
+			types = slices.Insert(types, 0, machine.TypeInit)
 		}
 
 		if err = configBundle.Write(".", encoder.CommentsAll, types...); err != nil {

cmd/talosctl/cmd/mgmt/cluster/show.go

@@ -5,11 +5,12 @@
 package cluster
 
 import (
+	"cmp"
 	"context"
 	"fmt"
 	"net/netip"
 	"os"
-	"sort"
+	"slices"
 	"strings"
 	"text/tabwriter"
 
@@ -76,7 +77,7 @@ func showCluster(cluster provision.Cluster) error {
 	fmt.Fprintf(w, "NAME\tTYPE\tIP\tCPU\tRAM\tDISK\n")
 
 	nodes := cluster.Info().Nodes
-	sort.Slice(nodes, func(i, j int) bool { return nodes[i].Name < nodes[j].Name })
+	slices.SortFunc(nodes, func(a, b provision.NodeInfo) int { return cmp.Compare(a.Name, b.Name) })
 
 	for _, node := range nodes {
 		cpus := "-"

cmd/talosctl/cmd/talos/config.go

@@ -14,7 +14,7 @@ import (
 	"errors"
 	"fmt"
 	"os"
-	"sort"
+	"slices"
 	"strings"
 	"text/tabwriter"
 	"text/template"
@@ -279,7 +279,7 @@ var configRemoveCmd = &cobra.Command{
 }
 
 func sortInPlace(slc []string) []string {
-	sort.Slice(slc, func(i, j int) bool { return slc[i] < slc[j] })
+	slices.Sort(slc)
 
 	return slc
 }
@@ -326,7 +326,7 @@ var configGetContextsCmd = &cobra.Command{
 		}
 
 		keys := maps.Keys(c.Contexts)
-		sort.Strings(keys)
+		slices.Sort(keys)
 
 		w := tabwriter.NewWriter(os.Stdout, 0, 0, 3, ' ', 0)
 		fmt.Fprintln(w, "CURRENT\tNAME\tENDPOINTS\tNODES")
@@ -587,7 +587,7 @@ func CompleteConfigContext(*cobra.Command, []string, string) ([]string, cobra.Sh
 	}
 
 	contextnames := maps.Keys(c.Contexts)
-	sort.Strings(contextnames)
+	slices.Sort(contextnames)
 
 	return contextnames, cobra.ShellCompDirectiveNoFileComp
 }

cmd/talosctl/cmd/talos/containers.go

@@ -8,7 +8,7 @@ import (
 	"context"
 	"fmt"
 	"os"
-	"sort"
+	"slices"
 	"strings"
 	"text/tabwriter"
 
@@ -68,10 +68,7 @@ func containerRender(remotePeer *peer.Peer, resp *machineapi.ContainersResponse)
 	defaultNode := client.AddrFromPeer(remotePeer)
 
 	for _, msg := range resp.Messages {
-		sort.Slice(msg.Containers,
-			func(i, j int) bool {
-				return strings.Compare(msg.Containers[i].Id, msg.Containers[j].Id) < 0
-			})
+		slices.SortFunc(msg.Containers, func(a, b *machineapi.ContainerInfo) int { return strings.Compare(a.Id, b.Id) })
 
 		for _, p := range msg.Containers {
 			display := p.Id

cmd/talosctl/cmd/talos/diskusage.go

@@ -9,6 +9,7 @@ import (
 	"errors"
 	"fmt"
 	"os"
+	"slices"
 	"strconv"
 	"text/tabwriter"
 
@@ -109,7 +110,7 @@ var duCmd = &cobra.Command{
 
 				if multipleNodes {
 					pattern = "%s\t%s\t%s\n"
-					args = append([]any{node}, args...)
+					args = slices.Insert(args, 0, any(node))
 				}
 
 				fmt.Fprintf(w, pattern, args...)

cmd/talosctl/cmd/talos/etcd.go

@@ -10,6 +10,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"slices"
 	"strings"
 	"text/tabwriter"
 
@@ -72,7 +73,7 @@ func displayAlarms(messages []alarmMessage) error {
 				alarm.GetAlarm().String(),
 			}
 			if node != "" {
-				args = append([]any{node}, args...)
+				args = slices.Insert(args, 0, any(node))
 			}
 
 			fmt.Fprintf(w, pattern, args...)
@@ -241,7 +242,7 @@ var etcdMemberListCmd = &cobra.Command{
 						member.IsLearner,
 					}
 					if node != "" {
-						args = append([]any{node}, args...)
+						args = slices.Insert(args, 0, any(node))
 					}
 
 					fmt.Fprintf(w, pattern, args...)
@@ -305,7 +306,7 @@ var etcdStatusCmd = &cobra.Command{
 					strings.Join(message.GetMemberStatus().GetErrors(), ", "),
 				}
 				if node != "" {
-					args = append([]any{node}, args...)
+					args = slices.Insert(args, 0, any(node))
 				}
 
 				fmt.Fprintf(w, pattern, args...)

cmd/talosctl/cmd/talos/health.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"slices"
 	"time"
 
 	"github.com/cosi-project/runtime/pkg/safe"
@@ -62,11 +63,7 @@ func (cl *clusterNodes) InitNodeInfos() error {
 	nodesByType[machine.TypeWorker] = workerNodeInfos
 	cl.nodesByType = nodesByType
 
-	nodes := make([]cluster.NodeInfo, 0, len(initNodeInfos)+len(controlPlaneNodeInfos)+len(workerNodeInfos))
-	nodes = append(nodes, initNodeInfos...)
-	nodes = append(nodes, controlPlaneNodeInfos...)
-	nodes = append(nodes, workerNodeInfos...)
-	cl.nodes = nodes
+	cl.nodes = slices.Concat(initNodeInfos, controlPlaneNodeInfos, workerNodeInfos)
 
 	return nil
 }

cmd/talosctl/cmd/talos/reset.go

@@ -8,7 +8,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"sort"
+	"slices"
 	"strings"
 
 	"github.com/siderolabs/gen/maps"
@@ -63,7 +63,7 @@ func (m *WipeMode) Set(value string) error {
 // Type implements Flag interface.
 func (m *WipeMode) Type() string {
 	options := maps.Keys(wipeOptions)
-	sort.Strings(options)
+	slices.Sort(options)
 
 	return strings.Join(options, ", ")
 }

cmd/talosctl/cmd/talos/stats.go

@@ -8,7 +8,7 @@ import (
 	"context"
 	"fmt"
 	"os"
-	"sort"
+	"slices"
 	"strings"
 	"text/tabwriter"
 
@@ -68,10 +68,7 @@ func statsRender(remotePeer *peer.Peer, resp *machineapi.StatsResponse) error {
 	defaultNode := client.AddrFromPeer(remotePeer)
 
 	for _, msg := range resp.Messages {
-		sort.Slice(msg.Stats,
-			func(i, j int) bool {
-				return strings.Compare(msg.Stats[i].Id, msg.Stats[j].Id) < 0
-			})
+		slices.SortFunc(msg.Stats, func(a, b *machineapi.Stat) int { return strings.Compare(a.Id, b.Id) })
 
 		for _, s := range msg.Stats {
 			display := s.Id

cmd/talosctl/cmd/talos/upgrade.go

@@ -5,11 +5,12 @@
 package talos
 
 import (
+	"cmp"
 	"context"
 	"errors"
 	"fmt"
 	"os"
-	"sort"
+	"slices"
 	"strings"
 	"text/tabwriter"
 	"time"
@@ -146,8 +147,8 @@ func upgradeGetActorID(ctx context.Context, c *client.Client, opts []client.Upgr
 
 func init() {
 	rebootModes := maps.Keys(machine.UpgradeRequest_RebootMode_value)
-	sort.Slice(rebootModes, func(i, j int) bool {
-		return machine.UpgradeRequest_RebootMode_value[rebootModes[i]] < machine.UpgradeRequest_RebootMode_value[rebootModes[j]]
+	slices.SortFunc(rebootModes, func(a, b string) int {
+		return cmp.Compare(machine.UpgradeRequest_RebootMode_value[a], machine.UpgradeRequest_RebootMode_value[b])
 	})
 
 	rebootModes = xslices.Map(rebootModes, strings.ToLower)

cmd/talosctl/pkg/talos/helpers/mode.go

@@ -7,7 +7,7 @@ package helpers
 import (
 	"fmt"
 	"os"
-	"sort"
+	"slices"
 	"strings"
 
 	"github.com/siderolabs/gen/maps"
@@ -61,7 +61,7 @@ func (m *Mode) Set(value string) error {
 // Type implements Flag interface.
 func (m *Mode) Type() string {
 	options := maps.Keys(m.options)
-	sort.Strings(options)
+	slices.Sort(options)
 
 	return strings.Join(options, ", ")
 }

hack/module-sig-verify/main.go

@@ -82,12 +82,6 @@ func main() {
 	}
 }
 
-type noOPCloser struct {
-	io.ReadSeeker
-}
-
-func (noOPCloser) Close() error { return nil }
-
 func parseModuleInput(module string) (io.ReadSeekCloser, error) {
 	if module == "-" {
 		moduleData, err := io.ReadAll(os.Stdin)
@@ -95,7 +89,13 @@ func parseModuleInput(module string) (io.ReadSeekCloser, error) {
 			return nil, fmt.Errorf("failed to read module from stdin: %w", err)
 		}
 
-		return noOPCloser{bytes.NewReader(moduleData)}, nil
+		return struct {
+			io.ReadSeeker
+			io.Closer
+		}{
+			bytes.NewReader(moduleData),
+			io.NopCloser(nil),
+		}, nil
 	}
 
 	moduleData, err := os.Open(module)

internal/app/apid/pkg/backend/apid.go

@@ -8,6 +8,7 @@ import (
 	"context"
 	"crypto/tls"
 	"fmt"
+	"slices"
 	"sync"
 	"time"
 
@@ -212,9 +213,8 @@ func (a *APID) AppendInfo(streaming bool, resp []byte) ([]byte, error) {
 		protowire.AppendVarint(nil, (metadataField<<3)|metadataType),
 		uint64(len(resp)+len(payload)),
 	)
-	resp = append(prefix, resp...)
 
-	return append(resp, payload...), err
+	return slices.Concat(prefix, resp, payload), err
 }
 
 // BuildError is called to convert error from upstream into response field.

internal/app/machined/internal/server/v1alpha1/v1alpha1_cluster.go

@@ -140,7 +140,7 @@ func buildClusterInfo(ctx context.Context,
 		}
 
 		return &clusterState{
-			nodeInfos: append(slices.Clone(controlPlaneNodeInfos), workerNodeInfos...),
+			nodeInfos: slices.Concat(controlPlaneNodeInfos, workerNodeInfos),
 			nodeInfosByType: map[machine.Type][]cluster.NodeInfo{
 				machine.TypeControlPlane: controlPlaneNodeInfos,
 				machine.TypeWorker:       workerNodeInfos,

internal/app/machined/pkg/adapters/network/nftables_rule.go

@@ -676,36 +676,16 @@ func (a nftablesRule) Compile() (*NfTablesCompiled, error) {
 		result.Rules = [][]expr.Any{append(rulePre, rulePost...)}
 	case rule4 != nil && rule6 == nil:
 		result.Rules = [][]expr.Any{
-			append(rulePre,
-				append(
-					append(matchV4, rule4...),
-					rulePost...,
-				)...,
-			),
+			slices.Concat(rulePre, matchV4, rule4, rulePost),
 		}
 	case rule4 == nil && rule6 != nil:
 		result.Rules = [][]expr.Any{
-			append(rulePre,
-				append(
-					append(matchV6, rule6...),
-					rulePost...,
-				)...,
-			),
+			slices.Concat(rulePre, matchV6, rule6, rulePost),
 		}
 	case rule4 != nil && rule6 != nil:
 		result.Rules = [][]expr.Any{
-			append(slices.Clone(rulePre),
-				append(
-					append(matchV4, rule4...),
-					rulePost...,
-				)...,
-			),
-			append(slices.Clone(rulePre),
-				append(
-					append(matchV6, rule6...),
-					rulePost...,
-				)...,
-			),
+			slices.Concat(rulePre, matchV4, rule4, rulePost),
+			slices.Concat(rulePre, matchV6, rule6, rulePost),
 		}
 	}
 

internal/app/machined/pkg/controllers/cluster/endpoint.go

@@ -9,7 +9,6 @@ import (
 	"fmt"
 	"net/netip"
 	"slices"
-	"sort"
 
 	"github.com/cosi-project/runtime/pkg/controller"
 	"github.com/cosi-project/runtime/pkg/safe"
@@ -75,7 +74,7 @@ func (ctrl *EndpointController) Run(ctx context.Context, r controller.Runtime, l
 			endpoints = append(endpoints, memberSpec.Addresses...)
 		}
 
-		sort.Slice(endpoints, func(i, j int) bool { return endpoints[i].Compare(endpoints[j]) < 0 })
+		slices.SortFunc(endpoints, func(a, b netip.Addr) int { return a.Compare(b) })
 
 		if err := safe.WriterModify(
 			ctx,

internal/app/machined/pkg/controllers/ctest/assert.go

@@ -6,7 +6,7 @@ package ctest
 
 import (
 	"fmt"
-	"sort"
+	"slices"
 	"strings"
 
 	"github.com/siderolabs/go-retry/retry"
@@ -46,7 +46,7 @@ func (agg *assertionAggregator) Error() error {
 		lines = append(lines, " * "+errorString)
 	}
 
-	sort.Strings(lines)
+	slices.Sort(lines)
 
 	return fmt.Errorf("%s", strings.Join(lines, "\n"))
 }

internal/app/machined/pkg/controllers/etcd/spec.go

@@ -8,6 +8,7 @@ import (
 	"context"
 	"fmt"
 	"net/netip"
+	"slices"
 
 	"github.com/cosi-project/runtime/pkg/controller"
 	"github.com/cosi-project/runtime/pkg/resource"
@@ -144,13 +145,15 @@ func (ctrl *SpecController) Run(ctx context.Context, r controller.Runtime, _ *za
 			advertiseValidSubnets = []string{"0.0.0.0/0", "::/0"}
 		}
 
-		advertisedCIDRs := make([]string, 0, len(advertiseValidSubnets)+len(etcdConfig.TypedSpec().AdvertiseExcludeSubnets))
-		advertisedCIDRs = append(advertisedCIDRs, advertiseValidSubnets...)
-		advertisedCIDRs = append(advertisedCIDRs, xslices.Map(etcdConfig.TypedSpec().AdvertiseExcludeSubnets, func(cidr string) string { return "!" + cidr })...)
+		advertisedCIDRs := slices.Concat(
+			advertiseValidSubnets,
+			xslices.Map(etcdConfig.TypedSpec().AdvertiseExcludeSubnets, func(cidr string) string { return "!" + cidr }),
+		)
 
-		listenCIDRs := make([]string, 0, len(etcdConfig.TypedSpec().ListenValidSubnets)+len(etcdConfig.TypedSpec().ListenExcludeSubnets))
-		listenCIDRs = append(listenCIDRs, etcdConfig.TypedSpec().ListenValidSubnets...)
-		listenCIDRs = append(listenCIDRs, xslices.Map(etcdConfig.TypedSpec().ListenExcludeSubnets, func(cidr string) string { return "!" + cidr })...)
+		listenCIDRs := slices.Concat(
+			etcdConfig.TypedSpec().ListenValidSubnets,
+			xslices.Map(etcdConfig.TypedSpec().ListenExcludeSubnets, func(cidr string) string { return "!" + cidr }),
+		)
 
 		defaultListenAddress := netip.AddrFrom4([4]byte{0, 0, 0, 0})
 		loopbackAddress := netip.AddrFrom4([4]byte{127, 0, 0, 1})

internal/app/machined/pkg/controllers/files/cri_config_parts.go

@@ -8,7 +8,7 @@ import (
 	"context"
 	"fmt"
 	"path/filepath"
-	"sort"
+	"slices"
 
 	"github.com/cosi-project/runtime/pkg/controller"
 	"github.com/cosi-project/runtime/pkg/safe"
@@ -70,7 +70,7 @@ func (ctrl *CRIConfigPartsController) Run(ctx context.Context, r controller.Runt
 			return err
 		}
 
-		sort.Strings(parts)
+		slices.Sort(parts)
 
 		out, err := toml.Merge(parts)
 		if err != nil {

internal/app/machined/pkg/controllers/k8s/address_filter.go

@@ -97,7 +97,7 @@ func (ctrl *AddressFilterController) Run(ctx context.Context, r controller.Runti
 			}
 
 			if err = safe.WriterModify(ctx, r, network.NewNodeAddressFilter(network.NamespaceName, k8s.NodeAddressFilterNoK8s), func(r *network.NodeAddressFilter) error {
-				r.TypedSpec().ExcludeSubnets = append(slices.Clone(podCIDRs), serviceCIDRs...)
+				r.TypedSpec().ExcludeSubnets = slices.Concat(podCIDRs, serviceCIDRs)
 
 				return nil
 			}); err != nil {
@@ -105,7 +105,7 @@ func (ctrl *AddressFilterController) Run(ctx context.Context, r controller.Runti
 			}
 
 			if err = safe.WriterModify(ctx, r, network.NewNodeAddressFilter(network.NamespaceName, k8s.NodeAddressFilterOnlyK8s), func(r *network.NodeAddressFilter) error {
-				r.TypedSpec().IncludeSubnets = append(slices.Clone(podCIDRs), serviceCIDRs...)
+				r.TypedSpec().IncludeSubnets = slices.Concat(podCIDRs, serviceCIDRs)
 
 				return nil
 			}); err != nil {

internal/app/machined/pkg/controllers/k8s/nodeip.go

@@ -8,6 +8,7 @@ import (
 	"context"
 	"fmt"
 	"net/netip"
+	"slices"
 
 	"github.com/cosi-project/runtime/pkg/controller"
 	"github.com/cosi-project/runtime/pkg/resource"
@@ -99,10 +100,10 @@ func (ctrl *NodeIPController) Run(ctx context.Context, r controller.Runtime, log
 		}
 
 		addrs := nodeAddrs.TypedSpec().IPs()
-
-		cidrs := make([]string, 0, len(cfgSpec.ValidSubnets)+len(cfgSpec.ExcludeSubnets))
-		cidrs = append(cidrs, cfgSpec.ValidSubnets...)
-		cidrs = append(cidrs, xslices.Map(cfgSpec.ExcludeSubnets, func(cidr string) string { return "!" + cidr })...)
+		cidrs := slices.Concat(
+			cfgSpec.ValidSubnets,
+			xslices.Map(cfgSpec.ExcludeSubnets, func(cidr string) string { return "!" + cidr }),
+		)
 
 		ips, err := net.FilterIPs(addrs, cidrs)
 		if err != nil {

internal/app/machined/pkg/controllers/kubeaccess/serviceaccount/crd_controller.go

@@ -13,7 +13,6 @@ import (
 	"errors"
 	"fmt"
 	"slices"
-	"sort"
 	"sync"
 	"time"
 
@@ -584,8 +583,8 @@ func (t *CRDController) needsUpdate(secret *corev1.Secret, desiredRoles []string
 
 	actualRoles := certificate.Subject.Organization
 
-	sort.Strings(actualRoles)
-	sort.Strings(desiredRoles)
+	slices.Sort(actualRoles)
+	slices.Sort(desiredRoles)
 
 	if !slices.Equal(actualRoles, desiredRoles) {
 		t.logger.Debug("roles in certificate do not match desired roles",

internal/app/machined/pkg/controllers/kubespan/kubespan_test.go

@@ -7,7 +7,6 @@ package kubespan_test
 import (
 	"context"
 	"slices"
-	"sort"
 	"sync"
 	"time"
 
@@ -64,7 +63,7 @@ func (suite *KubeSpanSuite) assertResourceIDs(md resource.Metadata, expectedIDs
 
 		actualIDs := xslices.Map(l.Items, func(r resource.Resource) string { return r.Metadata().ID() })
 
-		sort.Strings(expectedIDs)
+		slices.Sort(expectedIDs)
 
 		if !slices.Equal(actualIDs, expectedIDs) {
 			return retry.ExpectedErrorf("ids do no match expected %v != actual %v", expectedIDs, actualIDs)

internal/app/machined/pkg/controllers/network/address_config_test.go

@@ -5,11 +5,12 @@
 package network_test
 
 import (
+	"cmp"
 	"context"
 	"fmt"
 	"net"
 	"net/url"
-	"sort"
+	"slices"
 	"sync"
 	"testing"
 	"time"
@@ -126,7 +127,7 @@ func (suite *AddressConfigSuite) TestCmdlineNoNetmask() {
 
 	ifaces, _ := net.Interfaces() //nolint:errcheck // ignoring error here as ifaces will be empty
 
-	sort.Slice(ifaces, func(i, j int) bool { return ifaces[i].Name < ifaces[j].Name })
+	slices.SortFunc(ifaces, func(a, b net.Interface) int { return cmp.Compare(a.Name, b.Name) })
 
 	ifaceName := ""
 

internal/app/machined/pkg/controllers/network/cmdline.go

@@ -5,11 +5,12 @@
 package network
 
 import (
+	"cmp"
 	"errors"
 	"fmt"
 	"net"
 	"net/netip"
-	"sort"
+	"slices"
 	"strconv"
 	"strings"
 
@@ -230,7 +231,7 @@ func ParseCmdlineNetwork(cmdline *procfs.Cmdline) (CmdlineNetworking, error) {
 			if linkConfig.LinkName == "" {
 				ifaces, _ := net.Interfaces() //nolint:errcheck // ignoring error here as ifaces will be empty
 
-				sort.Slice(ifaces, func(i, j int) bool { return ifaces[i].Name < ifaces[j].Name })
+				slices.SortFunc(ifaces, func(a, b net.Interface) int { return cmp.Compare(a.Name, b.Name) })
 
 				for _, iface := range ifaces {
 					if iface.Flags&net.FlagLoopback != 0 {

internal/app/machined/pkg/controllers/network/cmdline_test.go

@@ -5,10 +5,11 @@
 package network_test
 
 import (
+	"cmp"
 	"fmt"
 	"net"
 	"net/netip"
-	"sort"
+	"slices"
 	"testing"
 
 	"github.com/siderolabs/go-procfs/procfs"
@@ -26,7 +27,7 @@ type CmdlineSuite struct {
 func (suite *CmdlineSuite) TestParse() {
 	ifaces, _ := net.Interfaces() //nolint:errcheck // ignoring error here as ifaces will be empty
 
-	sort.Slice(ifaces, func(i, j int) bool { return ifaces[i].Name < ifaces[j].Name })
+	slices.SortFunc(ifaces, func(a, b net.Interface) int { return cmp.Compare(a.Name, b.Name) })
 
 	defaultIfaceName := ""
 

internal/app/machined/pkg/controllers/network/link_merge.go

@@ -6,9 +6,9 @@
 package network
 
 import (
+	"cmp"
 	"context"
 	"fmt"
-	"sort"
 
 	"github.com/cosi-project/runtime/pkg/controller"
 	"github.com/cosi-project/runtime/pkg/resource"
@@ -65,32 +65,24 @@ func (ctrl *LinkMergeController) Run(ctx context.Context, r controller.Runtime,
 		}
 
 		// list source network configuration resources
-		list, err := r.List(ctx, resource.NewMetadata(network.ConfigNamespaceName, network.LinkSpecType, "", resource.VersionUndefined))
+		list, err := safe.ReaderList[*network.LinkSpec](ctx, r, resource.NewMetadata(network.ConfigNamespaceName, network.LinkSpecType, "", resource.VersionUndefined))
 		if err != nil {
 			return fmt.Errorf("error listing source network routes: %w", err)
 		}
 
 		// sort by link name, configuration layer
-		sort.Slice(list.Items, func(i, j int) bool {
-			left := list.Items[i].(*network.LinkSpec)  //nolint:forcetypeassert
-			right := list.Items[j].(*network.LinkSpec) //nolint:forcetypeassert
-
-			if left.TypedSpec().Name < right.TypedSpec().Name {
-				return false
+		list.SortFunc(func(left, right *network.LinkSpec) int {
+			if res := cmp.Compare(left.TypedSpec().Name, right.TypedSpec().Name); res != 0 {
+				return res
 			}
 
-			if left.TypedSpec().Name == right.TypedSpec().Name {
-				return left.TypedSpec().ConfigLayer < right.TypedSpec().ConfigLayer
-			}
-
-			return true
+			return cmp.Compare(left.TypedSpec().ConfigLayer, right.TypedSpec().ConfigLayer)
 		})
 
 		// build final link definition merging multiple layers
-		links := map[string]*network.LinkSpecSpec{}
+		links := make(map[string]*network.LinkSpecSpec, list.Len())
 
-		for _, res := range list.Items {
-			link := res.(*network.LinkSpec) //nolint:forcetypeassert
+		for link := range list.All() {
 			id := network.LinkID(link.TypedSpec().Name)
 
 			existing, ok := links[id]
@@ -124,12 +116,12 @@ func (ctrl *LinkMergeController) Run(ctx context.Context, r controller.Runtime,
 		}
 
 		// list link for cleanup
-		list, err = r.List(ctx, resource.NewMetadata(network.NamespaceName, network.LinkSpecType, "", resource.VersionUndefined))
+		list, err = safe.ReaderList[*network.LinkSpec](ctx, r, resource.NewMetadata(network.NamespaceName, network.LinkSpecType, "", resource.VersionUndefined))
 		if err != nil {
 			return fmt.Errorf("error listing resources: %w", err)
 		}
 
-		for _, res := range list.Items {
+		for res := range list.All() {
 			if _, ok := links[res.Metadata().ID()]; !ok {
 				var okToDestroy bool
 

internal/app/machined/pkg/controllers/network/nftables_chain_config.go

@@ -192,13 +192,13 @@ func (ctrl *NfTablesChainConfigController) Run(ctx context.Context, r controller
 								network.NfTablesRule{
 									MatchSourceAddress: &network.NfTablesAddressMatch{
 										IncludeSubnets: xslices.Map(
-											append(slices.Clone(cfg.Config().Cluster().Network().PodCIDRs()), cfg.Config().Cluster().Network().ServiceCIDRs()...),
+											slices.Concat(cfg.Config().Cluster().Network().PodCIDRs(), cfg.Config().Cluster().Network().ServiceCIDRs()),
 											netip.MustParsePrefix,
 										),
 									},
 									MatchDestinationAddress: &network.NfTablesAddressMatch{
 										IncludeSubnets: xslices.Map(
-											append(slices.Clone(cfg.Config().Cluster().Network().PodCIDRs()), cfg.Config().Cluster().Network().ServiceCIDRs()...),
+											slices.Concat(cfg.Config().Cluster().Network().PodCIDRs(), cfg.Config().Cluster().Network().ServiceCIDRs()),
 											netip.MustParsePrefix,
 										),
 									},

internal/app/machined/pkg/controllers/network/node_address.go

@@ -320,16 +320,16 @@ func updateAccumulativeAddresses(ctx context.Context, r controller.Runtime, id r
 
 		for _, ip := range accumulative {
 			// find insert position using binary search
-			i := sort.Search(len(spec.Addresses), func(j int) bool {
-				return !spec.Addresses[j].Addr().Less(ip.Addr())
+			pos, _ := slices.BinarySearchFunc(spec.Addresses, ip.Addr(), func(prefix netip.Prefix, addr netip.Addr) int {
+				return prefix.Addr().Compare(ip.Addr())
 			})
 
-			if i < len(spec.Addresses) && spec.Addresses[i].Addr().Compare(ip.Addr()) == 0 {
+			if pos < len(spec.Addresses) && spec.Addresses[pos].Addr().Compare(ip.Addr()) == 0 {
 				continue
 			}
 
 			// insert at position i
-			spec.Addresses = slices.Insert(spec.Addresses, i, ip)
+			spec.Addresses = slices.Insert(spec.Addresses, pos, ip)
 		}
 
 		return nil

internal/app/machined/pkg/controllers/network/node_address_test.go

@@ -7,7 +7,7 @@ package network_test
 
 import (
 	"net/netip"
-	"sort"
+	"slices"
 	"strings"
 	"testing"
 	"time"
@@ -51,9 +51,10 @@ func (suite *NodeAddressSuite) TestDefaults() {
 			suite.T().Logf("id %q val %s", r.Metadata().ID(), addrs)
 
 			asrt.True(
-				sort.SliceIsSorted(
-					addrs, func(i, j int) bool {
-						return addrs[i].Addr().Compare(addrs[j].Addr()) < 0
+				slices.IsSortedFunc(
+					addrs,
+					func(a, b netip.Prefix) int {
+						return a.Addr().Compare(b.Addr())
 					},
 				), "addresses %s", addrs,
 			)

internal/app/machined/pkg/controllers/runtime/cri_image_gc_test.go

@@ -7,7 +7,6 @@ package runtime_test
 import (
 	"context"
 	"slices"
-	"sort"
 	"sync"
 	"testing"
 	"time"
@@ -288,8 +287,8 @@ func TestBuildExpectedImageNames(t *testing.T) {
 
 			expectedImageNames := maps.Keys(expectedImages)
 
-			sort.Strings(test.expectedImageNames)
-			sort.Strings(expectedImageNames)
+			slices.Sort(test.expectedImageNames)
+			slices.Sort(expectedImageNames)
 
 			assert.Equal(t, test.expectedImageNames, expectedImageNames)
 		})

internal/app/machined/pkg/runtime/drainer.go

@@ -7,6 +7,7 @@ package runtime
 import (
 	"context"
 	"errors"
+	"slices"
 	"sync"
 )
 
@@ -98,7 +99,7 @@ func (s *DrainSubscription) Cancel() {
 
 	for i, sub := range s.drainer.subscriptions {
 		if sub == s {
-			s.drainer.subscriptions = append(s.drainer.subscriptions[:i], s.drainer.subscriptions[i+1:]...)
+			s.drainer.subscriptions = slices.Delete(s.drainer.subscriptions, i, i+1)
 
 			break
 		}

internal/app/machined/pkg/runtime/v1alpha1/platform/nocloud/metadata.go

@@ -14,7 +14,7 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
-	"sort"
+	"slices"
 	"strings"
 
 	"github.com/cosi-project/runtime/pkg/safe"
@@ -577,7 +577,7 @@ func (n *Nocloud) applyNetworkConfigV2(config *NetworkConfig, st state.State, ne
 	}
 
 	ethernetNames := maps.Keys(config.Ethernets)
-	sort.Strings(ethernetNames)
+	slices.Sort(ethernetNames)
 
 	for _, name := range ethernetNames {
 		eth := config.Ethernets[name]

internal/app/machined/pkg/system/system.go

@@ -5,11 +5,12 @@
 package system
 
 import (
+	"cmp"
 	"context"
 	"errors"
 	"fmt"
 	"log"
-	"sort"
+	"slices"
 	"strings"
 	"sync"
 	"time"
@@ -386,7 +387,7 @@ func (s *singleton) List() (result []*ServiceRunner) {
 
 	// TODO: results should be sorted properly with topological sort on dependencies
 	//       but, we don't have dependencies yet, so sort by service id for now to get stable order
-	sort.Slice(result, func(i, j int) bool { return result[i].id < result[j].id })
+	slices.SortFunc(result, func(a, b *ServiceRunner) int { return cmp.Compare(a.id, b.id) })
 
 	return
 }

internal/integration/api/reset.go

@@ -8,7 +8,7 @@ package api
 
 import (
 	"context"
-	"sort"
+	"slices"
 	"testing"
 	"time"
 
@@ -73,7 +73,7 @@ func (suite *ResetSuite) TestResetNodeByNode() {
 	nodes := suite.DiscoverNodeInternalIPs(suite.ctx)
 	suite.Require().NotEmpty(nodes)
 
-	sort.Strings(nodes)
+	slices.Sort(nodes)
 
 	for _, node := range nodes {
 		suite.ResetNode(suite.ctx, node, &machineapi.ResetRequest{

internal/integration/base/cluster.go

@@ -30,7 +30,7 @@ func newNodeInfo(masterNodes, workerNodes []string) (*infoWrapper, error) {
 	}
 
 	return &infoWrapper{
-		nodeInfos: append(slices.Clone(controlPlaneNodeInfos), workerNodeInfos...),
+		nodeInfos: slices.Concat(controlPlaneNodeInfos, workerNodeInfos),
 		nodeInfosByType: map[machine.Type][]cluster.NodeInfo{
 			machine.TypeControlPlane: controlPlaneNodeInfos,
 			machine.TypeWorker:       workerNodeInfos,

internal/integration/base/flags.go

@@ -6,7 +6,12 @@
 
 package base
 
-import "strings"
+import (
+	"slices"
+	"strings"
+
+	"github.com/siderolabs/gen/xiter/xstrings"
+)
 
 // StringList implements flag.Value for list of strings.
 type StringList []string
@@ -18,7 +23,7 @@ func (l *StringList) String() string {
 
 // Set implements flag.Value.
 func (l *StringList) Set(value string) error {
-	*l = append(*l, strings.Split(value, ",")...)
+	*l = slices.AppendSeq(*l, xstrings.SplitSeq(value, ","))
 
 	return nil
 }

internal/pkg/dashboard/components/footer.go

@@ -6,7 +6,7 @@ package components
 
 import (
 	"fmt"
-	"sort"
+	"slices"
 	"strings"
 
 	"github.com/gdamore/tcell/v2"
@@ -109,7 +109,7 @@ func (widget *Footer) nodesText() string {
 
 func (widget *Footer) screensText() string {
 	screenKeys := maps.Keys(widget.screenKeyToName)
-	sort.Strings(screenKeys)
+	slices.Sort(screenKeys)
 
 	screenTexts := make([]string, 0, len(widget.screenKeyToName))
 

internal/pkg/dashboard/components/networkinfo.go

@@ -6,7 +6,7 @@ package components
 
 import (
 	"net/netip"
-	"sort"
+	"slices"
 	"strings"
 
 	"github.com/cosi-project/runtime/pkg/resource"
@@ -197,11 +197,9 @@ func (widget *NetworkInfo) setAddresses(data resourcedata.Data, nodeAddress *net
 			return notAvailable
 		}
 
-		strs := xslices.Map(res.TypedSpec().Addresses, func(prefix netip.Prefix) string {
-			return prefix.String()
-		})
+		strs := xslices.Map(res.TypedSpec().Addresses, netip.Prefix.String)
 
-		sort.Strings(strs)
+		slices.Sort(strs)
 
 		return strings.Join(strs, ", ")
 	}
@@ -238,8 +236,8 @@ func (widget *NetworkInfo) gateway(statuses []*network.RouteStatus) string {
 		return notAvailable
 	}
 
-	sort.Strings(gatewaysV4)
-	sort.Strings(gatewaysV6)
+	slices.Sort(gatewaysV4)
+	slices.Sort(gatewaysV6)
 
 	return strings.Join(append(gatewaysV4, gatewaysV6...), ", ")
 }

internal/pkg/dashboard/networkconfig.go

@@ -7,7 +7,7 @@ package dashboard
 import (
 	"context"
 	"fmt"
-	"sort"
+	"slices"
 	"strings"
 
 	"github.com/gdamore/tcell/v2"
@@ -348,7 +348,7 @@ func (widget *NetworkConfigGrid) updateNodeData(data resourcedata.Data) {
 
 		links := maps.Keys(nodeData.linkSet)
 
-		sort.Strings(links)
+		slices.Sort(links)
 
 		allLinks := append([]string{interfaceNone}, links...)
 

internal/pkg/encryption/encryption.go

@@ -6,11 +6,12 @@
 package encryption
 
 import (
+	"cmp"
 	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
-	"sort"
+	"slices"
 	"strconv"
 	"time"
 
@@ -66,7 +67,7 @@ func NewHandler(encryptionConfig block.EncryptionSpec, volumeID string, getSyste
 	}
 
 	//nolint:scopelint
-	sort.Slice(keyHandlers, func(i, j int) bool { return keyHandlers[i].Slot() < keyHandlers[j].Slot() })
+	slices.SortFunc(keyHandlers, func(a, b keys.Handler) int { return cmp.Compare(a.Slot(), b.Slot()) })
 
 	provider := luks.New(
 		cipher,

internal/pkg/extensions/list.go

@@ -5,10 +5,11 @@
 package extensions
 
 import (
+	"cmp"
 	"fmt"
 	"os"
 	"path/filepath"
-	"sort"
+	"slices"
 
 	"github.com/siderolabs/talos/pkg/machinery/extensions"
 )
@@ -28,7 +29,7 @@ func List(rootPath string) ([]*Extension, error) {
 		return nil, nil
 	}
 
-	sort.Slice(items, func(i, j int) bool { return items[i].Name() < items[j].Name() })
+	slices.SortFunc(items, func(a, b os.DirEntry) int { return cmp.Compare(a.Name(), b.Name()) })
 
 	result := make([]*Extension, 0, len(items))
 

internal/pkg/meta/internal/adv/talos/talos_test.go

@@ -7,7 +7,6 @@ package talos_test
 import (
 	"bytes"
 	"slices"
-	"sort"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -86,7 +85,7 @@ func TestMarshalUnmarshal(t *testing.T) {
 		assert.Equal(t, val3, val)
 
 		tags := a.ListTags()
-		sort.Slice(tags, func(i, j int) bool { return tags[i] < tags[j] })
+		slices.Sort(tags)
 		assert.Equal(t, []uint8{adv.Reserved1, adv.Reserved2, adv.Reserved3}, tags)
 	}
 }

pkg/archiver/archiver_test.go

@@ -8,6 +8,7 @@ import (
 	"bytes"
 	"os"
 	"path/filepath"
+	"slices"
 
 	"github.com/stretchr/testify/suite"
 )
@@ -74,8 +75,10 @@ func (suite *CommonSuite) SetupSuite() {
 		var contents []byte
 
 		if file.Size > 0 {
-			contents = bytes.Repeat(file.Contents, file.Size/len(file.Contents))
-			contents = append(contents, file.Contents[:file.Size-file.Size/len(file.Contents)*len(file.Contents)]...)
+			contents = slices.Concat(
+				bytes.Repeat(file.Contents, file.Size/len(file.Contents)),
+				file.Contents[:file.Size-file.Size/len(file.Contents)*len(file.Contents)],
+			)
 		} else {
 			contents = file.Contents
 		}

pkg/argsbuilder/argsbuilder_args.go

@@ -6,7 +6,7 @@ package argsbuilder
 
 import (
 	"fmt"
-	"sort"
+	"slices"
 	"strings"
 
 	"github.com/siderolabs/gen/maps"
@@ -92,7 +92,7 @@ func (a Args) Set(k, v Key) ArgsBuilder {
 // Args implements the ArgsBuilder interface.
 func (a Args) Args() []string {
 	keys := maps.Keys(a)
-	sort.Strings(keys)
+	slices.Sort(keys)
 
 	args := make([]string, 0, len(a))
 

pkg/cluster/bootstrap.go

@@ -9,7 +9,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"sort"
+	"slices"
 	"strings"
 	"time"
 
@@ -45,9 +45,7 @@ func (s *APIBootstrapper) Bootstrap(ctx context.Context, out io.Writer) error {
 		return errors.New("no control plane nodes to bootstrap")
 	}
 
-	sort.Slice(controlPlaneNodes, func(i, j int) bool {
-		return controlPlaneNodes[i].IPs[0].String() < controlPlaneNodes[j].IPs[0].String()
-	})
+	slices.SortFunc(controlPlaneNodes, func(a, b NodeInfo) int { return strings.Compare(a.IPs[0].String(), b.IPs[0].String()) })
 
 	nodeIP := controlPlaneNodes[0].IPs[0]
 	nodeCtx := client.WithNodes(ctx, nodeIP.String())

pkg/cluster/check/etcd.go

@@ -5,11 +5,12 @@
 package check
 
 import (
+	"cmp"
 	"context"
 	"errors"
 	"fmt"
 	"net/url"
-	"sort"
+	"slices"
 
 	"github.com/siderolabs/gen/maps"
 	"github.com/siderolabs/gen/xslices"
@@ -55,8 +56,8 @@ func EtcdConsistentAssertion(ctx context.Context, cl ClusterInfo) error {
 		return errors.New("no messages returned")
 	}
 
-	sort.Slice(messages, func(i, j int) bool {
-		return messages[i].GetMetadata().GetHostname() < messages[j].GetMetadata().GetHostname()
+	slices.SortFunc(messages, func(a, b *machineapi.EtcdMembers) int {
+		return cmp.Compare(a.GetMetadata().GetHostname(), b.GetMetadata().GetHostname())
 	})
 
 	for i, message := range messages {

pkg/cluster/check/service.go

@@ -6,10 +6,11 @@
 package check
 
 import (
+	"cmp"
 	"context"
 	"errors"
 	"fmt"
-	"sort"
+	"slices"
 
 	"github.com/hashicorp/go-multierror"
 
@@ -111,8 +112,8 @@ func ServiceHealthAssertion(ctx context.Context, cl ClusterInfo, service string,
 	var multiErr *multierror.Error
 
 	// sort service info list so that errors returned are consistent
-	sort.Slice(servicesInfo, func(i, j int) bool {
-		return servicesInfo[i].Metadata.GetHostname() < servicesInfo[j].Metadata.GetHostname()
+	slices.SortFunc(servicesInfo, func(a, b client.ServiceInfo) int {
+		return cmp.Compare(a.Metadata.GetHostname(), b.Metadata.GetHostname())
 	})
 
 	for _, serviceInfo := range servicesInfo {

pkg/cluster/cluster.go

@@ -10,7 +10,7 @@ import (
 	"fmt"
 	"io"
 	"net/netip"
-	"sort"
+	"slices"
 
 	"github.com/siderolabs/gen/maps"
 	"github.com/siderolabs/gen/xslices"
@@ -123,7 +123,7 @@ func NodesMatch(expected, actual []NodeInfo) error {
 	if len(actualNodes) > 0 {
 		unexpectedIPs := xslices.FlatMap(maps.Keys(actualNodes), func(n *NodeInfo) []netip.Addr { return n.IPs })
 
-		sort.Slice(unexpectedIPs, func(i, j int) bool { return unexpectedIPs[i].Less(unexpectedIPs[j]) })
+		slices.SortFunc(unexpectedIPs, func(a, b netip.Addr) int { return a.Compare(b) })
 
 		return fmt.Errorf("unexpected nodes with IPs %q", unexpectedIPs)
 	}

pkg/cluster/kubernetes/kubelet.go

@@ -15,6 +15,7 @@ import (
 	"github.com/cosi-project/runtime/pkg/resource"
 	"github.com/cosi-project/runtime/pkg/safe"
 	"github.com/cosi-project/runtime/pkg/state"
+	"github.com/siderolabs/gen/xiter"
 	"github.com/siderolabs/go-retry/retry"
 	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -37,7 +38,7 @@ func upgradeKubelet(ctx context.Context, cluster UpgradeProvider, options Upgrad
 
 	options.Log("updating kubelet to version %q", options.Path.ToVersion())
 
-	for _, node := range append(slices.Clone(options.controlPlaneNodes), options.workerNodes...) {
+	for node := range xiter.Concat(slices.Values(options.controlPlaneNodes), slices.Values(options.workerNodes)) {
 		if err := upgradeKubeletOnNode(ctx, cluster, options, node); err != nil {
 			return fmt.Errorf("error updating node %q: %w", node, err)
 		}

pkg/cluster/kubernetes/talos_managed.go

@@ -8,12 +8,14 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"slices"
 	"strings"
 	"time"
 
 	"github.com/cosi-project/runtime/pkg/resource"
 	"github.com/cosi-project/runtime/pkg/state"
 	"github.com/siderolabs/gen/channel"
+	"github.com/siderolabs/gen/xiter"
 	"github.com/siderolabs/go-kubernetes/kubernetes/manifests"
 	"github.com/siderolabs/go-kubernetes/kubernetes/upgrade"
 	"google.golang.org/grpc/codes"
@@ -148,7 +150,7 @@ func prePullImages(ctx context.Context, talosClient *client.Client, options Upgr
 
 	imageRef := fmt.Sprintf("%s:v%s", options.KubeletImage, options.Path.ToVersion())
 
-	for _, node := range append(append([]string(nil), options.controlPlaneNodes...), options.workerNodes...) {
+	for node := range xiter.Concat(slices.Values(options.controlPlaneNodes), slices.Values(options.workerNodes)) {
 		options.Log(" > %q: pre-pulling %s", node, imageRef)
 
 		err := talosClient.ImagePull(client.WithNode(ctx, node), common.ContainerdNamespace_NS_SYSTEM, imageRef)

pkg/grpc/middleware/log/log.go

@@ -8,7 +8,7 @@ package log
 import (
 	"context"
 	"log"
-	"sort"
+	"slices"
 	"strings"
 	"time"
 
@@ -38,7 +38,7 @@ var sensitiveFields = map[string]struct{}{
 func ExtractMetadata(ctx context.Context) string {
 	md, _ := metadata.FromIncomingContext(ctx)
 	keys := maps.Keys(md)
-	sort.Strings(keys)
+	slices.Sort(keys)
 
 	pairs := make([]string, 0, len(keys))
 

pkg/imager/filemap/filemap.go

@@ -7,10 +7,11 @@ package filemap
 
 import (
 	"archive/tar"
+	"cmp"
 	"io"
 	"os"
 	"path/filepath"
-	"sort"
+	"slices"
 
 	v1 "github.com/google/go-containerregistry/pkg/v1"
 	"github.com/google/go-containerregistry/pkg/v1/tarball"
@@ -105,9 +106,7 @@ func build(filemap []File) io.ReadCloser {
 //
 // A filemap is a path -> file content map representing a file system.
 func Layer(filemap []File) (v1.Layer, error) {
-	sort.Slice(filemap, func(i, j int) bool {
-		return filemap[i].ImagePath < filemap[j].ImagePath
-	})
+	slices.SortFunc(filemap, func(a, b File) int { return cmp.Compare(a.ImagePath, b.ImagePath) })
 
 	// Return a new copy of the buffer each time it's opened.
 	return tarball.LayerFromOpener(func() (io.ReadCloser, error) {

pkg/machinery/config/container/container.go

@@ -10,6 +10,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"slices"
 	"strings"
 
 	"github.com/cosi-project/runtime/pkg/state"
@@ -122,7 +123,7 @@ func (container *Container) PatchV1Alpha1(patcher func(*v1alpha1.Config) error)
 		return !ok
 	})
 
-	return New(append([]config.Document{cfg}, otherDocs...)...)
+	return New(slices.Insert(otherDocs, 0, config.Document(cfg))...)
 }
 
 // Readonly implements config.Container interface.

pkg/machinery/config/encoder/encoder.go

@@ -5,9 +5,10 @@
 package encoder
 
 import (
+	"cmp"
 	"encoding"
 	"reflect"
-	"sort"
+	"slices"
 	"strings"
 
 	yaml "gopkg.in/yaml.v3"
@@ -287,9 +288,7 @@ func toYamlNode(in any, options *Options) (*yaml.Node, error) {
 		node.Kind = yaml.MappingNode
 		keys := v.MapKeys()
 		// always interate keys in alphabetical order to preserve the same output for maps
-		sort.Slice(keys, func(i, j int) bool {
-			return keys[i].String() < keys[j].String()
-		})
+		slices.SortFunc(keys, func(a, b reflect.Value) int { return cmp.Compare(a.String(), b.String()) })
 
 		for _, k := range keys {
 			element := v.MapIndex(k)

pkg/machinery/config/merge/merge_test.go

@@ -6,7 +6,7 @@ package merge_test
 
 import (
 	"fmt"
-	"sort"
+	"slices"
 	"testing"
 
 	"github.com/siderolabs/go-pointer"
@@ -40,7 +40,7 @@ func (s *CustomSlice) Merge(other any) error {
 	}
 
 	*s = append(*s, otherSlice...)
-	sort.Strings(*s)
+	slices.Sort(*s)
 
 	return nil
 }

pkg/machinery/formatters/formatters.go

@@ -10,6 +10,7 @@ import (
 	"fmt"
 	"io"
 	"math"
+	"slices"
 	"strings"
 	"text/tabwriter"
 	"time"
@@ -58,7 +59,7 @@ func RenderMounts(resp *machine.MountsResponse, output io.Writer, remotePeer *pe
 			if defaultNode != "" {
 				format = "%s\t" + format
 
-				args = append([]any{node}, args...)
+				args = slices.Insert(args, 0, any(node))
 			}
 
 			fmt.Fprintf(w, format, args...)

pkg/machinery/resources/k8s/endpoint.go

@@ -6,7 +6,7 @@ package k8s
 
 import (
 	"net/netip"
-	"sort"
+	"slices"
 
 	"github.com/cosi-project/runtime/pkg/resource"
 	"github.com/cosi-project/runtime/pkg/resource/meta"
@@ -71,13 +71,14 @@ type EndpointList []netip.Addr
 // Merge endpoints from multiple Endpoint resources into a single list.
 func (l EndpointList) Merge(endpoint *Endpoint) EndpointList {
 	for _, ip := range endpoint.TypedSpec().Addresses {
-		idx := sort.Search(len(l), func(i int) bool { return !l[i].Less(ip) })
-
+		idx, _ := slices.BinarySearchFunc(l, ip, func(a netip.Addr, target netip.Addr) int {
+			return a.Compare(target)
+		})
 		if idx < len(l) && l[idx].Compare(ip) == 0 {
 			continue
 		}
 
-		l = append(l[:idx], append([]netip.Addr{ip}, l[idx:]...)...)
+		l = slices.Insert(l, idx, ip)
 	}
 
 	return l

pkg/machinery/resources/secrets/cert_sans.go

@@ -7,7 +7,7 @@ package secrets
 import (
 	"net"
 	"net/netip"
-	"sort"
+	"slices"
 
 	"github.com/cosi-project/runtime/pkg/resource"
 	"github.com/cosi-project/runtime/pkg/resource/meta"
@@ -126,8 +126,8 @@ func (spec *CertSANSpec) StdIPs() []net.IP {
 
 // Sort the CertSANs.
 func (spec *CertSANSpec) Sort() {
-	sort.Strings(spec.DNSNames)
-	sort.Slice(spec.IPs, func(i, j int) bool { return spec.IPs[i].Compare(spec.IPs[j]) < 0 })
+	slices.Sort(spec.DNSNames)
+	slices.SortFunc(spec.IPs, func(a, b netip.Addr) int { return a.Compare(b) })
 }
 
 func init() {

pkg/machinery/role/role.go

@@ -5,7 +5,7 @@
 package role
 
 import (
-	"sort"
+	"slices"
 	"strings"
 
 	"github.com/siderolabs/gen/maps"
@@ -93,7 +93,7 @@ func Parse(str []string) (Set, []string) {
 // Strings returns a set as a slice of strings.
 func (s Set) Strings() []string {
 	res := maps.KeysFunc(s.roles, func(r Role) string { return string(r) })
-	sort.Strings(res)
+	slices.Sort(res)
 
 	return res
 }

pkg/provision/providers/qemu/preflight.go

@@ -12,6 +12,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"runtime"
+	"slices"
 	"strings"
 
 	"github.com/coreos/go-iptables/iptables"
@@ -52,7 +53,7 @@ type preflightCheckContext struct {
 	arch    Arch
 }
 
-func (check *preflightCheckContext) verifyRoot(ctx context.Context) error {
+func (check *preflightCheckContext) verifyRoot(context.Context) error {
 	if os.Geteuid() != 0 {
 		return errors.New("error: please run as root user (CNI requirement), we recommend running with `sudo -E`")
 	}
@@ -60,7 +61,7 @@ func (check *preflightCheckContext) verifyRoot(ctx context.Context) error {
 	return nil
 }
 
-func (check *preflightCheckContext) checkKVM(ctx context.Context) error {
+func (check *preflightCheckContext) checkKVM(context.Context) error {
 	f, err := os.OpenFile("/dev/kvm", os.O_RDWR, 0)
 	if err != nil {
 		return fmt.Errorf("error opening /dev/kvm, please make sure KVM support is enabled in Linux kernel: %w", err)
@@ -69,7 +70,7 @@ func (check *preflightCheckContext) checkKVM(ctx context.Context) error {
 	return f.Close()
 }
 
-func (check *preflightCheckContext) qemuExecutable(ctx context.Context) error {
+func (check *preflightCheckContext) qemuExecutable(context.Context) error {
 	if check.arch.QemuExecutable() == "" {
 		return fmt.Errorf("QEMU executable (qemu-system-%s or qemu-kvm) not found, please install QEMU with package manager", check.arch.QemuArch())
 	}
@@ -77,7 +78,7 @@ func (check *preflightCheckContext) qemuExecutable(ctx context.Context) error {
 	return nil
 }
 
-func (check *preflightCheckContext) checkFlashImages(ctx context.Context) error {
+func (check *preflightCheckContext) checkFlashImages(context.Context) error {
 	for _, flashImage := range check.arch.PFlash(check.options.UEFIEnabled, check.options.ExtraUEFISearchPaths) {
 		if len(flashImage.SourcePaths) == 0 {
 			continue
@@ -103,7 +104,7 @@ func (check *preflightCheckContext) checkFlashImages(ctx context.Context) error
 	return nil
 }
 
-func (check *preflightCheckContext) swtpmExecutable(ctx context.Context) error {
+func (check *preflightCheckContext) swtpmExecutable(context.Context) error {
 	if check.options.TPM2Enabled {
 		if _, err := exec.LookPath("swtpm"); err != nil {
 			return fmt.Errorf("swtpm not found in PATH, please install swtpm-tools with the package manager: %w", err)
@@ -113,8 +114,8 @@ func (check *preflightCheckContext) swtpmExecutable(ctx context.Context) error {
 	return nil
 }
 
-func (check *preflightCheckContext) cniDirectories(ctx context.Context) error {
-	cniDirs := append([]string{}, check.request.Network.CNI.BinPath...)
+func (check *preflightCheckContext) cniDirectories(context.Context) error {
+	cniDirs := slices.Clone(check.request.Network.CNI.BinPath)
 	cniDirs = append(cniDirs, check.request.Network.CNI.CacheDir, check.request.Network.CNI.ConfDir)
 
 	for _, cniDir := range cniDirs {

pkg/provision/providers/vm/node.go

@@ -6,6 +6,7 @@ package vm
 
 import (
 	"fmt"
+	"slices"
 
 	multierror "github.com/hashicorp/go-multierror"
 
@@ -16,8 +17,7 @@ import (
 func (p *Provisioner) DestroyNodes(cluster provision.ClusterInfo, options *provision.Options) error {
 	errCh := make(chan error)
 
-	nodes := append([]provision.NodeInfo{}, cluster.Nodes...)
-	nodes = append(nodes, cluster.ExtraNodes...)
+	nodes := slices.Concat(cluster.Nodes, cluster.ExtraNodes)
 
 	for _, node := range nodes {
 		go func(node provision.NodeInfo) {