ci: add managarm sysdep test

.github/workflows/ci.yml

@@ -52,7 +52,7 @@ jobs:
     compile-sysdeps:
         strategy:
             matrix:
-                sysdeps: [dripos, lemon, aero, ironclad, lyre, keyronex]
+                sysdeps: [dripos, lemon, aero, ironclad, lyre, keyronex, managarm]
         name: Compile sysdeps
         runs-on: ubuntu-22.04
         container:
@@ -69,6 +69,23 @@ jobs:
             uses: actions/checkout@v2
             with:
               path: src/mlibc/
+          - if: matrix.sysdeps == 'managarm'
+            name: Set up managarm subprojects directory
+            run: |
+              mkdir -p subprojects
+            working-directory: src/mlibc/
+          - if: matrix.sysdeps == 'managarm'
+            name: Clone managarm/managarm
+            uses: actions/checkout@v4
+            with:
+              repository: 'managarm/managarm'
+              path: 'src/mlibc/subprojects/managarm'
+          - if: matrix.sysdeps == 'managarm'
+            name: Clone managarm/bragi
+            uses: actions/checkout@v4
+            with:
+              repository: 'managarm/bragi'
+              path: 'src/mlibc/subprojects/bragi'
           - name: Set up linux kernel headers
             run: |
                 mkdir -p build/mlibc/