Install from source

.github/workflows/main.yml

@@ -55,7 +55,7 @@ jobs:
         run: |
           MATRIX_INCLUDE=$(
             {
-              cibuildwheel --print-build-identifiers --platform linux --arch x86_64,aarch64,i686 | grep cp | jq -nRc '{"only": inputs, "os": "ubuntu-latest"}' \
+              cibuildwheel --print-build-identifiers --platform linux --arch all | grep cp | jq -nRc '{"only": inputs, "os": "ubuntu-latest"}' \
               && cibuildwheel --print-build-identifiers --platform macos --arch x86_64 | grep cp |  jq -nRc '{"only": inputs, "os": "macos-13"}' \
               && cibuildwheel --print-build-identifiers --platform macos --arch arm64 | grep cp |  jq -nRc '{"only": inputs, "os": "macos-14"}' \
               && cibuildwheel --print-build-identifiers --platform windows --arch x86,AMD64 | grep cp |  jq -nRc '{"only": inputs, "os": "windows-latest"}'
@@ -89,20 +89,8 @@ jobs:
         only: ${{ matrix.only }}
       env:
         CIBW_BUILD_VERBOSITY: 1
-        CIBW_MANYLINUX_X86_64_IMAGE: manylinux_2_28
-        CIBW_MANYLINUX_PYPY_X86_64_IMAGE: manylinux_2_28
-        CIBW_MANYLINUX_AARCH64_IMAGE: manylinux_2_28
-        CIBW_MANYLINUX_PPC64LE_IMAGE: manylinux_2_28
-        CIBW_MANYLINUX_S390X_IMAGE: manylinux_2_28
-        CIBW_MANYLINUX_PYPY_AARCH64_IMAGE: manylinux_2_28
-        CIBW_MANYLINUX_PYPY_I686_IMAGE: manylinux_2_28
-        CIBW_MUSLLINUX_X86_64_IMAGE: musllinux_1_2
-        CIBW_MUSLLINUX_I686_IMAGE: musllinux_1_2
-        CIBW_MUSLLINUX_AARCH64_IMAGE: musllinux_1_2
-        CIBW_MUSLLINUX_PPC64LE_IMAGE: musllinux_1_2
-        CIBW_MUSLLINUX_S390X_IMAGE: musllinux_1_2
-        CIBW_BEFORE_BUILD: bash -c "make install_libmagic"
-        CIBW_TEST_COMMAND: python -c "import magic; assert magic.Magic(mime=True).from_buffer(b'\x00\x00\x00\x1cftypisom\x00\x00\x02\x00isomiso2mp41\x00') == 'video/mp4'"
+        CIBW_BEFORE_BUILD: bash "add_libmagic.sh"
+        CIBW_TEST_COMMAND: python -c "import magic; assert magic.Magic(mime=True).from_buffer(b'\x00\x00\x00\x1cftypiso5\x00\x00\x00\x01isomiso5hlsf\x00\x00') == 'video/mp4'"
 
     - uses: actions/upload-artifact@v4
       with:

add_libmagic.sh

@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+
+set -euxo pipefail
+
+install_source() {
+    version="file-5.45"
+    (
+        tmpfile="$(mktemp)" &&
+        curl -sSLo "${tmpfile}" "https://astron.com/pub/file/${version}.tar.gz" &&
+        tar xvf "${tmpfile}" &&
+        cd "${version}" &&
+        ./configure &&
+        make &&
+        make install &&
+        make installcheck &&
+        cd .. &&
+        rm -r "${version}"
+    ) || (cd .. && rm -r "${version}" && false)
+}
+
+install_precompiled() {
+    # Mac https://formulae.brew.sh/formula/libmagic
+    # Debian https://packages.ubuntu.com/libmagic1
+    # Alpine https://pkgs.alpinelinux.org/package/libmagic
+    # RHEL https://git.almalinux.org/rpms/file
+    # Windows https://github.com/julian-r/file-windows
+    if [ -n "$(which brew)" ]; then
+        brew install libmagic
+    elif [ -n "$(which apt-get)" ]; then
+        apt-get update
+        apt-get install -y libmagic1
+    elif [ -n "$(which apk)" ]; then
+        apk add --update libmagic
+    elif [ -n "$(which yum)" ]; then
+        yum install file-libs
+    else
+        python -c 'import platform, sysconfig, io, zipfile, urllib.request; assert platform.system() == "Windows"; machine = "x86" if sysconfig.get_platform() == "win32" else "x64"; print(machine); zipfile.ZipFile(io.BytesIO(urllib.request.urlopen(f"https://github.com/julian-r/file-windows/releases/download/v5.44/file_5.44-build104-vs2022-{machine}.zip").read())).extractall(".")' &&
+        ls -ltra
+    fi
+}
+
+copy_libmagic() {
+    # on cibuildwheel, the lib needs to exist in the project before running setup.py
+    # copy lib into the magic dir, regardless of platform
+    libmagic_path="$(python -c 'from magic.loader import load_lib; print(load_lib()._name)')" &&
+    cp "${libmagic_path}" "magic" &&
+    # only on linux: additionally copy compiled db into magic dir
+    ( ( cp "/usr/local/share/misc/magic.mgc" "magic" || cp "/usr/share/misc/magic.mgc" "magic" ) || true ) &&
+    # check what was copied
+    ls -ltra magic
+}
+
+install_source || install_precompiled
+copy_libmagic

magic/loader.py

@@ -39,6 +39,7 @@ def _lib_candidates():
         for i in prefixes:
             yield os.path.join(here, i)
             yield os.path.join(os.path.abspath('.'), i)
+            yield os.path.join('/usr/local/lib', i)
             # on some linux systems (musl/alpine), find_library('magic') returns None
             # first try ldconfig with backup string in case of error
             yield subprocess.check_output(