From 72352f984f8c4b2291bcb2c08b7b6dc718619a38 Mon Sep 17 00:00:00 2001
From: jolheiser <john.olheiser@gmail.com>
Date: Mon, 13 Nov 2023 21:32:57 -0600
Subject: [PATCH] docs: add man page to nix

Signed-off-by: jolheiser <john.olheiser@gmail.com>
---
 flake.nix |  7 +++++++
 man.go    | 25 +++++++++++++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 man.go

diff --git a/flake.nix b/flake.nix
index 567f4b5..9846d7f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -30,6 +30,13 @@
 
           doCheck = false;
 
+          nativeBuildInputs = [pkgs.installShellFiles];
+
+          preInstall = ''
+            go run man.go
+            installManPage git-age.1
+          '';
+
           meta = with pkgs.lib; {
             description = "";
             homepage = "https://git.jojodev.com/jolheiser/git-age";
diff --git a/man.go b/man.go
new file mode 100644
index 0000000..15ff69a
--- /dev/null
+++ b/man.go
@@ -0,0 +1,25 @@
+//go:build man
+
+package main
+
+import (
+	"os"
+
+	"go.jolheiser.com/git-age/cmd"
+)
+
+func main() {
+	fi, err := os.Create("git-age.1")
+	if err != nil {
+		panic(err)
+	}
+	defer fi.Close()
+
+	app := cmd.New()
+	man, err := app.ToMan()
+	if err != nil {
+		panic(err)
+	}
+
+	fi.WriteString(man)
+}