packaging: add debian package draft

docs/CHANGELOG.md

@@ -39,6 +39,8 @@
   release for manual review instead of publishing immediately.
 - The one-line installer now downloads `checksums.txt`, verifies the selected
   binary before installation, and fails fast on missing release assets.
+- Added a Debian packaging metadata draft for the future Ubuntu PPA path, with
+  lightweight validation in `make release-check`.
 
 ## 2026-05-18 - Interactive input polish
 

packaging/README.md

@@ -8,11 +8,12 @@ any public registry.
 
 - `arch/PKGBUILD` - AUR-ready draft for `tnt-chat`.
 - `homebrew/tnt-chat.rb` - Homebrew tap formula draft.
-- `debian/README.md` - Ubuntu PPA / Debian packaging notes.
+- `debian/` - Ubuntu PPA / Debian packaging notes and draft metadata.
 
 ## Release checklist
 
 1. Confirm `TNT_VERSION` in `include/common.h` and the manpage version match.
+   Also update package versions in Arch, Homebrew, and Debian drafts.
 2. Create a GitHub release tag such as `v1.0.0`.
 3. Build and upload release tarballs or rely on GitHub source archives.
 4. Replace placeholder checksums in package drafts.

packaging/debian/README.md

@@ -4,6 +4,22 @@ Ubuntu distribution should start with a Launchpad PPA. Direct inclusion in
 Debian or Ubuntu archives is a separate, slower process and should wait until
 the project has a stable release cadence.
 
+## Draft metadata
+
+The `debian/` directory in this folder is a packaging draft. To test it against
+an upstream release tree, copy it to the root of a clean source checkout:
+
+```sh
+cp -a packaging/debian/debian ./debian
+dpkg-buildpackage -us -uc
+```
+
+For PPA uploads, build a signed source package instead:
+
+```sh
+debuild -S
+```
+
 ## Recommended path
 
 1. Keep the upstream project installable with:
@@ -12,14 +28,13 @@ the project has a stable release cadence.
    make DESTDIR="$pkgdir" PREFIX=/usr install
    ```
 
-2. Create Debian packaging metadata from a release tarball:
+2. Review Debian packaging metadata from a release tarball:
 
    - `debian/control`
    - `debian/rules`
    - `debian/changelog`
    - `debian/copyright`
-   - `debian/install`
-   - optional `debian/tnt.service`
+   - `debian/source/format`
 
 3. Build locally with `debuild` or `dpkg-buildpackage`.
 4. Upload the signed source package to a Launchpad PPA.

packaging/debian/debian/changelog

@@ -0,0 +1,5 @@
+tnt-chat (1.0.0-1) unstable; urgency=medium
+
+  * Initial package draft.
+
+ -- M1ng <REPLACE_WITH_EMAIL>  Thu, 21 May 2026 00:00:00 +0800

packaging/debian/debian/control

@@ -0,0 +1,22 @@
+Source: tnt-chat
+Section: net
+Priority: optional
+Maintainer: M1ng <REPLACE_WITH_EMAIL>
+Build-Depends:
+ debhelper-compat (= 13),
+ libssh-dev,
+ make,
+ gcc
+Standards-Version: 4.7.0
+Homepage: https://github.com/m1ngsama/TNT
+Rules-Requires-Root: no
+
+Package: tnt-chat
+Architecture: any
+Depends:
+ ${misc:Depends},
+ ${shlibs:Depends}
+Description: SSH-native terminal chat server
+ TNT is a minimalist terminal chat server accessed over SSH. It provides a
+ Vim-style terminal interface, anonymous access by default, persistent message
+ history, and a small non-interactive SSH exec surface for scripts.

packaging/debian/debian/copyright

@@ -0,0 +1,26 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: TNT
+Source: https://github.com/m1ngsama/TNT
+
+Files: *
+Copyright: 2026 M1ng
+License: MIT
+
+License: MIT
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+ .
+ The above copyright notice and this permission notice shall be included in all
+ copies or substantial portions of the Software.
+ .
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ SOFTWARE.

packaging/debian/debian/rules

@@ -0,0 +1,11 @@
+#!/usr/bin/make -f
+
+%:
+	dh $@
+
+override_dh_auto_build:
+	$(MAKE)
+
+override_dh_auto_install:
+	$(MAKE) DESTDIR=$(CURDIR)/debian/tnt-chat PREFIX=/usr install
+	$(MAKE) DESTDIR=$(CURDIR)/debian/tnt-chat PREFIX=/usr install-systemd

packaging/debian/debian/source/format

@@ -0,0 +1 @@
+3.0 (quilt)

scripts/release_check.sh

@@ -15,6 +15,7 @@ Default checks:
   - unit tests
   - staged install layout with PREFIX=/usr and DESTDIR
   - installer shell syntax
+  - Debian packaging metadata
   - Arch/Homebrew packaging syntax
 
 Environment:
@@ -65,6 +66,10 @@ grep -q "^pkgver=$version$" packaging/arch/PKGBUILD ||
     fail "packaging/arch/PKGBUILD pkgver does not match $version"
 grep -q "v${version}.tar.gz" packaging/homebrew/tnt-chat.rb ||
     fail "packaging/homebrew/tnt-chat.rb URL does not match v$version"
+grep -q "^tnt-chat (${version}-1)" packaging/debian/debian/changelog ||
+    fail "packaging/debian/debian/changelog version does not match $version"
+grep -q "^Source: tnt-chat$" packaging/debian/debian/control ||
+    fail "packaging/debian/debian/control Source is not tnt-chat"
 
 step "building"
 make clean
@@ -101,6 +106,12 @@ make DESTDIR="$tmpdir" PREFIX=/usr install-systemd
 step "checking installer syntax"
 sh -n install.sh
 
+step "checking Debian packaging metadata"
+[ -x packaging/debian/debian/rules ] ||
+    fail "packaging/debian/debian/rules must be executable"
+grep -q "^3.0 (quilt)$" packaging/debian/debian/source/format ||
+    fail "unsupported Debian source format"
+
 step "checking packaging syntax"
 if command -v bash >/dev/null 2>&1; then
     bash -n packaging/arch/PKGBUILD