python.pkgs.git-annex-adapter: use patch to hardcode git-annex path

pkgs/development/python-modules/git-annex-adapter/default.nix

@@ -1,5 +1,5 @@
-{ stdenv, buildPythonPackage, isPy3k, fetchFromGitHub, fetchpatch
-, utillinux, pygit2, gitMinimal, git-annex
+{ stdenv, buildPythonPackage, isPy3k, fetchFromGitHub, substituteAll
+, python, utillinux, pygit2, gitMinimal, git-annex
 }:
 
 buildPythonPackage rec {
@@ -16,22 +16,22 @@ buildPythonPackage rec {
     sha256 = "146q1jhcfc7f96ajkhjffskkljk2xzivs5ih5clb8qx0sh7mj097";
   };
 
-  prePatch = ''
-    substituteInPlace git_annex_adapter/process.py \
-      --replace "'git', 'annex'" "'${git-annex}/bin/git-annex'" \
-      --replace "'git-annex'" "'${git-annex}/bin/git-annex'"
-  '';
+  patches = [
+    (substituteAll {
+      src = ./git-annex-path.patch;
+      gitAnnex = "${git-annex}/bin/git-annex";
+    })
+  ];
 
   checkInputs = [
+    gitMinimal
     utillinux # `rev` is needed in tests/test_process.py
   ];
 
-  propagatedBuildInputs = [ pygit2 gitMinimal ];
-
-  buildInputs = [ git-annex ];
+  propagatedBuildInputs = [ pygit2 ];
 
   checkPhase = ''
-    python -m unittest
+    ${python.interpreter} -m unittest
   '';
 
   meta = with stdenv.lib; {

pkgs/development/python-modules/git-annex-adapter/git-annex-path.patch

@@ -0,0 +1,75 @@
+diff --git a/git_annex_adapter/process.py b/git_annex_adapter/process.py
+index 6ddb985..bbd0ab8 100644
+--- a/git_annex_adapter/process.py
++++ b/git_annex_adapter/process.py
+@@ -389,7 +389,7 @@ class GitAnnexBatchProcess:
+     _procclass = Process
+ 
+     def __init__(self, args, workdir):
+-        self.args = ('git', 'annex', *args)
++        self.args = ('@gitAnnex@', *args)
+         self.workdir = workdir
+         self._process = None
+         self._dead_process = None
+@@ -586,7 +586,7 @@ class ProcessRunner:
+ class GitAnnexRunner(ProcessRunner):
+     """Helper class to run git-annex commands."""
+     def __init__(self, args_prefix, workdir):
+-        args_prefix = ('git-annex', *args_prefix)
++        args_prefix = ('@gitAnnex@', *args_prefix)
+         super().__init__(args_prefix, workdir)
+ 
+     def __call__(self, *args_suffix):
+diff --git a/tests/test_process.py b/tests/test_process.py
+index ed619bb..9335078 100644
+--- a/tests/test_process.py
++++ b/tests/test_process.py
+@@ -181,7 +181,7 @@ class TestProcessOnEmptyAnnex(TempAnnexTestCase):
+     def test_process_annex_metadata_batch(self):
+         """Process should be able to read one line"""
+         with Process(
+-            ['git', 'annex', 'metadata', '--batch', '--json'],
++            ['@gitAnnex@', 'metadata', '--batch', '--json'],
+             str(self.tempdir),
+         ) as proc:
+             proc.writeline(
+@@ -202,7 +202,7 @@ class TestProcessOnEmptyAnnex(TempAnnexTestCase):
+     def test_jsonprocess_annex_metadata_batch(self):
+         """JsonProcess should encode and decode properly"""
+         with JsonProcess(
+-            ['git', 'annex', 'metadata', '--batch', '--json'],
++            ['@gitAnnex@', 'metadata', '--batch', '--json'],
+             str(self.tempdir),
+         ) as proc:
+             obj = proc({'key':'SHA256E-s0--0'})
+@@ -218,7 +218,7 @@ class TestProcessOnEmptyAnnex(TempAnnexTestCase):
+     def test_process_annex_info_batch(self):
+         """Process should be able to read multiple lines"""
+         with Process(
+-            ['git', 'annex', 'info', '--batch'],
++            ['@gitAnnex@', 'info', '--batch'],
+             str(self.tempdir),
+         ) as proc:
+             proc.writeline('here')
+diff --git a/tests/utils.py b/tests/utils.py
+index 281ee3f..969aedc 100644
+--- a/tests/utils.py
++++ b/tests/utils.py
+@@ -107,7 +107,7 @@ class TempAnnexTestCase(TempRepoTestCase):
+         # Have to uninit before cleaning directory, since git-annex
+         # marks its objects read-only so that they don't get deleted.
+         subprocess.run(
+-            ['git', 'annex', 'uninit'],
++            ['@gitAnnex@', 'uninit'],
+             cwd=self.repo.workdir,
+             stdout=subprocess.PIPE,
+             stderr=subprocess.PIPE,
+@@ -122,7 +122,7 @@ class TempAnnexTestCase(TempRepoTestCase):
+         path.write_text(text)
+ 
+         subprocess.run(
+-            ['git', 'annex', 'add', '--quiet', relpath],
++            ['@gitAnnex@', 'add', '--quiet', relpath],
+             cwd=self.repo.workdir,
+             check=True,
+         )