chore: upgrade ffigen

lib/src/bindings/patch.dart

@@ -193,7 +193,8 @@ int numHunks(Pointer<git_patch> patch) => libgit2.git_patch_num_hunks(patch);
 Map<String, dynamic> hunk(Pointer<git_patch> patch, int hunkIdx) {
   final out = calloc<Pointer<git_diff_hunk>>();
   final linesInHunk = calloc<Int32>();
-  final error = libgit2.git_patch_get_hunk(out, linesInHunk, patch, hunkIdx);
+  final error =
+      libgit2.git_patch_get_hunk(out, linesInHunk.cast(), patch, hunkIdx);
   final result = <String, dynamic>{};
 
   if (error < 0) {

libgit2/headers/git2/sys/credential.h

@@ -7,8 +7,8 @@
 #ifndef INCLUDE_sys_git_credential_h__
 #define INCLUDE_sys_git_credential_h__
 
-#include "git2/common.h"
-#include "git2/credential.h"
+#include "../common.h"
+#include "../credential.h"
 
 /**
  * @file git2/sys/cred.h

pubspec.yaml

@@ -3,13 +3,13 @@ description: Dart bindings to libgit2
 version: 0.0.1
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: ">=2.15.0-82.0.dev <3.0.0"
 
 dependencies:
 
 dev_dependencies:
   lints: ^1.0.1
-  ffigen: ^3.1.0-dev.1
+  ffigen: ^4.0.0
   test: ^1.17.5
   path: ^1.8.0
 
@@ -25,3 +25,5 @@ ffigen:
     length: full
   llvm-path:
     - "/usr/lib64/libclang.so"
+  compiler-opts:
+    - "-I/lib64/clang/12.0.1/include"

test/commit_test.dart

@@ -94,7 +94,7 @@ void main() {
       expect(commit.parents[0].sha, mergeCommit);
 
       commit.free();
-    }, skip: 'skipped because of flaky segfaults');
+    });
 
     test('successfully creates commit without parents', () {
       final oid = Commit.create(
@@ -118,7 +118,7 @@ void main() {
       expect(commit.parents.length, 0);
 
       commit.free();
-    }, skip: 'skipped because of flaky segfaults');
+    });
 
     test('successfully creates commit with 2 parents', () {
       final oid = Commit.create(
@@ -144,7 +144,7 @@ void main() {
       expect(commit.parents[1].sha, 'fc38877b2552ab554752d9a77e1f48f738cca79b');
 
       commit.free();
-    }, skip: 'skipped because of flaky segfaults');
+    });
 
     test('successfully creates commit with short sha of tree', () {
       final oid = Commit.create(
@@ -169,6 +169,6 @@ void main() {
       expect(commit.parents[0].sha, mergeCommit);
 
       commit.free();
-    }, skip: 'skipped because of flaky segfaults');
+    });
   });
 }

test/diff_test.dart

@@ -315,7 +315,7 @@ index e69de29..c217c63 100644
       expect(hunk.oldLines, 0);
       expect(hunk.newStart, 1);
       expect(hunk.newLines, 1);
-      expect(hunk.header, '\x00\x00\x00\x00@@ -0,0 +1');
+      expect(hunk.header, '@@ -0,0 +1 @@\n');
 
       patch.free();
       diff.free();