kitty: fix unreproducible build (manpage dates, fish completions) (#396150)

--- a/tools/cli/fish.go	2025-04-04 23:43:16

+++ b/tools/cli/fish.go	2025-04-04 23:44:13

@@ -4,6 +4,7 @@

 import (

 	"fmt"

+	"sort"

 	"strings"

 	"kitty/tools/cli/markup"

@@ -22,6 +23,7 @@

 	}

 	if len(commands) == 0 {

 		commands = append(commands, utils.Keys(all_commands)...)

+		sort.Strings(commands)

 	}

 	script := strings.Builder{}

 	script.WriteString(`function __ksi_completions

--- a/tools/cli/help.go	2025-04-04 23:55:53

+++ b/tools/cli/help.go	2025-04-04 23:56:59

@@ -9,6 +9,7 @@

 	"os/exec"

 	"slices"

 	"strings"

+	"strconv"

 	"time"

 	"golang.org/x/sys/unix"

@@ -133,6 +134,15 @@

 	pager.Stdout = os.Stdout

 	pager.Stderr = os.Stderr

 	_ = pager.Run()

+}

+

+func getDeterministicTimestamp() time.Time {

+	if epochStr, exists := os.LookupEnv("SOURCE_DATE_EPOCH"); exists {

+			if epoch, err := strconv.ParseInt(epochStr, 10, 64); err == nil {

+					return time.Unix(epoch, 0).UTC()

+			}

+	}

+	return time.Now()

 }

 func (self *Command) GenerateManPages(level int, recurse bool) (err error) {

@@ -149,7 +159,7 @@

 		return err

 	}

 	defer outf.Close()

-	fmt.Fprintf(outf, `.TH "%s" "1" "%s" "%s" "%s"`, name, time.Now().Format("Jan 02, 2006"), kitty.VersionString, "kitten Manual")

+	fmt.Fprintf(outf, `.TH "%s" "1" "%s" "%s" "%s"`, name, getDeterministicTimestamp().Format("Jan 02, 2006"), kitty.VersionString, "kitten Manual")

 	fmt.Fprintln(outf)

 	fmt.Fprintln(outf, ".SH Name")

 	fmt.Fprintln(outf, name, "\\-", escape_text_for_man(self.ShortDescription))

    # Skip `test_ssh_bootstrap_with_different_launchers` when launcher is `zsh` since it causes:

    # OSError: master_fd is in error condition

    ./disable-test_ssh_bootstrap_with_different_launchers.patch

    # Makes man page generation respect SOURCE_DATE_EPOCH. Drop on next kitty release https://github.com/kovidgoyal/kitty/pull/8509

    ./fix-timestamp-reproducibility.patch

    # Ensures deterministic ordering of fish shell completions. Drop on next kitty release https://github.com/kovidgoyal/kitty/pull/8509

    ./fix-fish-completion-ordering.patch

  ];

  hardeningDisable = [