From f7474035ab5536abe69299fed6e124685ca9e3ef Mon Sep 17 00:00:00 2001
From: Lucas Hoffmann <lucc@posteo.de>
Date: Mon, 5 Aug 2024 09:41:29 +0200
Subject: [PATCH 1/2] nix: parse dependencies from pyproject file

---
 flake.nix | 24 ++++++++++--------------
 1 file changed, 10 insertions(+), 14 deletions(-)

diff --git a/flake.nix b/flake.nix
index 2ec460a99..6a0d7482f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -8,12 +8,19 @@
     flake-utils.lib.eachDefaultSystem (system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
+        pyproject = pkgs.lib.trivial.importTOML ./pyproject.toml;
+        # get a list of python packages by name
+        getPkgs = names: builtins.attrValues (pkgs.lib.attrsets.getAttrs names pkgs.python3Packages);
+        # extract the python dependencies from the pyprojec file, cut the version constraint
+        dependencies' = pkgs.lib.lists.concatMap (builtins.match "([^>=<]*).*") pyproject.project.dependencies;
+        # the package is called gpg on PyPI but gpgme in nixpkgs
+        dependencies = map (x: if x == "gpg" then "gpgme" else x) dependencies';
       in
       {
         packages = {
           alot = pkgs.python3Packages.buildPythonApplication {
             name = "alot";
-            version = "dev";
+            version = pyproject.project.version + "-post";
             src = self;
             pyproject = true;
             outputs = [
@@ -21,19 +28,8 @@
               "doc"
               "man"
             ];
-            build-system = with pkgs.python3Packages; [
-              setuptools
-              setuptools-scm
-            ];
-            dependencies = with pkgs.python3Packages; [
-              configobj
-              gpgme
-              notmuch2
-              python-magic
-              twisted
-              urwid
-              urwidtrees
-            ];
+            build-system = getPkgs pyproject."build-system".requires;
+            dependencies = getPkgs dependencies;
             postPatch = ''
               substituteInPlace alot/settings/manager.py \
                 --replace /usr/share "$out/share"

From 69bc1aad1f171653278322e1d291d27fddf5d3a8 Mon Sep 17 00:00:00 2001
From: Lucas Hoffmann <lucc@posteo.de>
Date: Tue, 6 Aug 2024 21:23:16 +0200
Subject: [PATCH 2/2] nix: add comment about pyproject parsing

---
 flake.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/flake.nix b/flake.nix
index 6a0d7482f..d487783da 100644
--- a/flake.nix
+++ b/flake.nix
@@ -8,8 +8,12 @@
     flake-utils.lib.eachDefaultSystem (system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
+        # we want to extract some metadata and especially the dependencies
+        # from the pyproject file, like this we do not have to maintain the
+        # list a second time
         pyproject = pkgs.lib.trivial.importTOML ./pyproject.toml;
-        # get a list of python packages by name
+        # get a list of python packages by name, used to get the nix packages
+        # for the dependency names from the pyproject file
         getPkgs = names: builtins.attrValues (pkgs.lib.attrsets.getAttrs names pkgs.python3Packages);
         # extract the python dependencies from the pyprojec file, cut the version constraint
         dependencies' = pkgs.lib.lists.concatMap (builtins.match "([^>=<]*).*") pyproject.project.dependencies;