From f0661b4ea421fa4508cd3725edc1dd8a10a59429 Mon Sep 17 00:00:00 2001
From: Alex Clarke <alex.j.tusa@gmail.com>
Date: Fri, 28 Aug 2026 22:49:58 -0600
Subject: [PATCH] feat: Support Linux ARM64 GNU

---
 .github/workflows/release.yaml |  5 ++++-
 scripts/install_coyote.ps1     | 27 +++++++++++----------------
 scripts/install_coyote.sh      | 24 ++++++++++--------------
 src/config/update.rs           |  2 +-
 4 files changed, 26 insertions(+), 32 deletions(-)

diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index b53de66..771a71b 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -166,6 +166,9 @@ jobs:
             os: ubuntu-latest
             use-cross: true
             cargo-flags: ''
+          - target: aarch64-unknown-linux-gnu
+            os: ubuntu-24.04-arm
+            cargo-flags: ''
           - target: aarch64-apple-darwin
             os: macos-latest
             use-cross: true
@@ -253,7 +256,7 @@ jobs:
         run: echo "BUILD_CMD=cross" >> $GITHUB_ENV
 
       - name: Install latest LLVM/Clang
-        if: matrix.os == 'ubuntu-latest'
+        if: startsWith(matrix.os, 'ubuntu')
         run: |
           wget https://apt.llvm.org/llvm.sh
           chmod +x llvm.sh
diff --git a/scripts/install_coyote.ps1 b/scripts/install_coyote.ps1
index b222bd6..5f8a27c 100644
--- a/scripts/install_coyote.ps1
+++ b/scripts/install_coyote.ps1
@@ -61,24 +61,19 @@ if ($os -eq 'windows') {
   if ($arch -eq 'x86_64') { $candidates += 'coyote-x86_64-apple-darwin.tar.gz' }
   else { $candidates += 'coyote-aarch64-apple-darwin.tar.gz' }
 } elseif ($os -eq 'linux') {
-  if ($arch -eq 'x86_64') {
-    # Mirror install_coyote.sh: only offer the gnu build when glibc is detected.
-    $libc = 'musl'
-    try { getconf GNU_LIBC_VERSION *> $null; if ($LASTEXITCODE -eq 0) { $libc = 'gnu' } } catch { }
-    try { if ((ldd --version 2>&1 | Out-String) -imatch 'glibc') { $libc = 'gnu' } } catch { }
-    if ($libc -eq 'gnu') {
-      $libssl3 = $false
-      try { if ((ldconfig -p 2>&1 | Out-String) -match 'libssl\.so\.3') { $libssl3 = $true } } catch { }
-      if ($libssl3) {
-        $candidates += 'coyote-x86_64-unknown-linux-gnu.tar.gz'
-      } else {
-        Write-Info "glibc detected but OpenSSL 3 (libssl.so.3) not found; using musl build"
-      }
+  $libc = 'musl'
+  try { getconf GNU_LIBC_VERSION *> $null; if ($LASTEXITCODE -eq 0) { $libc = 'gnu' } } catch { }
+  try { if ((ldd --version 2>&1 | Out-String) -imatch 'glibc') { $libc = 'gnu' } } catch { }
+  if ($libc -eq 'gnu') {
+    $libssl3 = $false
+    try { if ((ldconfig -p 2>&1 | Out-String) -match 'libssl\.so\.3') { $libssl3 = $true } } catch { }
+    if ($libssl3) {
+      $candidates += "coyote-$arch-unknown-linux-gnu.tar.gz"
+    } else {
+      Write-Info "glibc detected but OpenSSL 3 (libssl.so.3) not found; using musl build"
     }
-    $candidates += 'coyote-x86_64-unknown-linux-musl.tar.gz'
-  } else {
-    $candidates += 'coyote-aarch64-unknown-linux-musl.tar.gz'
   }
+  $candidates += "coyote-$arch-unknown-linux-musl.tar.gz"
 } else {
   Fail "Unsupported OS for this installer: $os"
 }
diff --git a/scripts/install_coyote.sh b/scripts/install_coyote.sh
index 18ace5f..b6c6e58 100755
--- a/scripts/install_coyote.sh
+++ b/scripts/install_coyote.sh
@@ -116,23 +116,19 @@ if [[ "$OS" == "darwin" ]]; then
     ASSET_CANDIDATES+=("coyote-aarch64-apple-darwin.tar.gz")
   fi
 elif [[ "$OS" == "linux" ]]; then
-  if [[ "$ARCH" == "x86_64" ]]; then
-    LIBC="musl"
-    if command -v getconf >/dev/null 2>&1 && getconf GNU_LIBC_VERSION >/dev/null 2>&1; then LIBC="gnu"; fi
-    if ldd --version 2>&1 | grep -qi glibc; then LIBC="gnu"; fi
+  LIBC="musl"
+  if command -v getconf >/dev/null 2>&1 && getconf GNU_LIBC_VERSION >/dev/null 2>&1; then LIBC="gnu"; fi
+  if ldd --version 2>&1 | grep -qi glibc; then LIBC="gnu"; fi
 
-    if [[ "$LIBC" == "gnu" ]]; then
-      if ldconfig -p 2>/dev/null | grep -q 'libssl\.so\.3'; then
-        ASSET_CANDIDATES+=("coyote-x86_64-unknown-linux-gnu.tar.gz")
-      else
-        log "glibc detected but OpenSSL 3 (libssl.so.3) not found; using musl build"
-      fi
+  if [[ "$LIBC" == "gnu" ]]; then
+    if ldconfig -p 2>/dev/null | grep -q 'libssl\.so\.3'; then
+      ASSET_CANDIDATES+=("coyote-${ARCH}-unknown-linux-gnu.tar.gz")
+    else
+      log "glibc detected but OpenSSL 3 (libssl.so.3) not found; using musl build"
     fi
-
-    ASSET_CANDIDATES+=("coyote-x86_64-unknown-linux-musl.tar.gz")
-  else
-    ASSET_CANDIDATES+=("coyote-aarch64-unknown-linux-musl.tar.gz")
   fi
+
+  ASSET_CANDIDATES+=("coyote-${ARCH}-unknown-linux-musl.tar.gz")
 else
   echo "Error: unsupported OS for this installer: $OS" >&2; exit 1
 fi
diff --git a/src/config/update.rs b/src/config/update.rs
index 9e074a7..0901ab1 100644
--- a/src/config/update.rs
+++ b/src/config/update.rs
@@ -72,7 +72,7 @@ fn preferred_update_target() -> Option<&'static str> {
     match (env::consts::OS, env::consts::ARCH) {
         ("linux", "x86_64") if cfg!(target_env = "gnu") => Some("x86_64-unknown-linux-gnu"),
         ("linux", "x86_64") => Some("x86_64-unknown-linux-musl"),
-        // No aarch64 gnu asset is published; musl is the only option.
+        ("linux", "aarch64") if cfg!(target_env = "gnu") => Some("aarch64-unknown-linux-gnu"),
         ("linux", "aarch64") => Some("aarch64-unknown-linux-musl"),
         _ => None,
     }