build: use npins

4 files changed, 103 insertions, 17 deletions

diff --git a/default.nix b/default.nix
index f6cac5c..897ac2e 100644
--- a/default.nix
+++ b/default.nix
@@ -2,7 +2,16 @@
 with pkgs.python310Packages;
 
 let
-  pywikiapi = import ./deps/pywikiapi.nix { inherit pkgs; };
+  sources = import ./npins;
+  pywikiapi = buildPythonPackage rec {
+    pname = "pywikiapi";
+    version = "pinned";
+    src = sources.pywikiapi;
+
+    dependencies = [
+      requests
+    ];
+  };
 in
 buildPythonApplication rec {
   pname = "osm-proposals";
diff --git a/deps/pywikiapi.nix b/deps/pywikiapi.nix
deleted file mode 100644
index 856f0f0..0000000
--- a/deps/pywikiapi.nix
+++ /dev/null
@@ -1,16 +0,0 @@
-{ pkgs }:
-with pkgs.python310Packages;
-
-buildPythonPackage rec {
-  pname = "pywikiapi";
-  version = "4.3.0";
-  src = pkgs.fetchPypi {
-    inherit pname;
-    inherit version;
-    hash = "sha256-gynkx98y8Vx/N3i6xoQ7x9MgTW6qACoYcDwy71FDYIE=";
-  };
-
-  dependencies = [
-    requests
-  ];
-}
diff --git a/npins/default.nix b/npins/default.nix
new file mode 100644
index 0000000..5e7d086
--- /dev/null
+++ b/npins/default.nix
@@ -0,0 +1,80 @@
+# Generated by npins. Do not modify; will be overwritten regularly
+let
+  data = builtins.fromJSON (builtins.readFile ./sources.json);
+  version = data.version;
+
+  mkSource =
+    spec:
+    assert spec ? type;
+    let
+      path =
+        if spec.type == "Git" then
+          mkGitSource spec
+        else if spec.type == "GitRelease" then
+          mkGitSource spec
+        else if spec.type == "PyPi" then
+          mkPyPiSource spec
+        else if spec.type == "Channel" then
+          mkChannelSource spec
+        else
+          builtins.throw "Unknown source type ${spec.type}";
+    in
+    spec // { outPath = path; };
+
+  mkGitSource =
+    {
+      repository,
+      revision,
+      url ? null,
+      hash,
+      branch ? null,
+      ...
+    }:
+    assert repository ? type;
+    # At the moment, either it is a plain git repository (which has an url), or it is a GitHub/GitLab repository
+    # In the latter case, there we will always be an url to the tarball
+    if url != null then
+      (builtins.fetchTarball {
+        inherit url;
+        sha256 = hash; # FIXME: check nix version & use SRI hashes
+      })
+    else
+      assert repository.type == "Git";
+      let
+        urlToName =
+          url: rev:
+          let
+            matched = builtins.match "^.*/([^/]*)(\\.git)?$" repository.url;
+
+            short = builtins.substring 0 7 rev;
+
+            appendShort = if (builtins.match "[a-f0-9]*" rev) != null then "-${short}" else "";
+          in
+          "${if matched == null then "source" else builtins.head matched}${appendShort}";
+        name = urlToName repository.url revision;
+      in
+      builtins.fetchGit {
+        url = repository.url;
+        rev = revision;
+        inherit name;
+        # hash = hash;
+      };
+
+  mkPyPiSource =
+    { url, hash, ... }:
+    builtins.fetchurl {
+      inherit url;
+      sha256 = hash;
+    };
+
+  mkChannelSource =
+    { url, hash, ... }:
+    builtins.fetchTarball {
+      inherit url;
+      sha256 = hash;
+    };
+in
+if version == 3 then
+  builtins.mapAttrs (_: mkSource) data.pins
+else
+  throw "Unsupported format version ${toString version} in sources.json. Try running `npins upgrade`"
diff --git a/npins/sources.json b/npins/sources.json
new file mode 100644
index 0000000..3b57f31
--- /dev/null
+++ b/npins/sources.json
@@ -0,0 +1,13 @@
+{
+  "pins": {
+    "pywikiapi": {
+      "type": "PyPi",
+      "name": "pywikiapi",
+      "version_upper_bound": null,
+      "version": "4.3.0",
+      "url": "https://files.pythonhosted.org/packages/9e/f0/09741c61d3069c99195690321cf0ad17c0a63d6ed33f130f45d9d85c2cb6/pywikiapi-4.3.0.tar.gz",
+      "hash": "8329e4c7df32f15c7f3778bac6843bc7d3204d6eaa002a18703c32ef51436081"
+    }
+  },
+  "version": 3
+}
\ No newline at end of file