Use PrivateStorageio fork.

default.nix

@@ -7,6 +7,7 @@ in
 , tahoe-lafs-repo ? sources.tahoe-lafs
 }:
   let
+    lib = pkgs.lib;
     providers = {
       _default = "sdist,nixpkgs,wheel";
       # mach-nix doesn't provide a good way to depend on mach-nix packages,
@@ -26,7 +27,7 @@ in
       testtools = "wheel";
       traceback2 = "wheel";
     };
-    tahoe-lafs = mach-nix.buildPythonPackage {
+    tahoe-lafs = mach-nix.buildPythonPackage rec {
       python = "python27";
       name = "tahoe-lafs";
       version = "1.16.post999";
@@ -42,7 +43,7 @@ in
         cat > src/allmydata/_version.py <<EOF
         # This _version.py is generated by nix.
 
-        verstr = "1.16.post999+git-${tahoe-lafs-repo.rev}"
+        verstr = "${version}+git-${tahoe-lafs-repo.rev}"
         __version__ = verstr
         EOF
       '';
@@ -51,7 +52,6 @@ in
   in
     mach-nix.buildPythonApplication rec {
       python = "python27";
-      name = "zero-knowledge-access-pass-authorizer";
       src = ./.;
       inherit providers;
       # mach-nix does not provide a way to specify dependencies on other
@@ -68,7 +68,6 @@ in
           }
         )
       ];
-      format = "setuptools";
       # Record some settings here, so downstream nix files can consume them.
       meta.mach-nix = { inherit python providers; };
     }

nix/sources.json

@@ -3,12 +3,12 @@
         "branch": "merged",
         "description": "Create highly reproducible python environments",
         "homepage": "",
-        "owner": "tp-la",
+        "owner": "PrivateStorageio",
         "repo": "mach-nix",
         "rev": "0872dd81afe9c4a6552604f7d21fe7f2baddf454",
         "sha256": "0hsbm6rmjjjzxdciirmcxyvrrlz19cbhprd2hfksrv6nnl4c3mc3",
         "type": "tarball",
-        "url": "https://github.com/tp-la/mach-nix/archive/0872dd81afe9c4a6552604f7d21fe7f2baddf454.tar.gz",
+        "url": "https://github.com/PrivateStorageio/mach-nix/archive/0872dd81afe9c4a6552604f7d21fe7f2baddf454.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "niv": {

setup.cfg

 # Generally describe the project
 [metadata]
-name = Zero-Knowledge Access Pass Authorizer
+name = zero-knowledge-access-pass-authorizer
 version = attr: _zkapauthorizer.__version__
 description = A `Tahoe-LAFS`_ storage-system plugin which authorizes storage operations based on privacy-respecting tokens.
 long_description = file: README.rst, CHANGELOG.rst, LICENSE-2.0.txt