Update Miniconda architectures

action.yml

@@ -235,8 +235,9 @@ inputs:
     default: ""
   architecture:
     description:
-      'Architecture of Miniconda that should be installed. Available options on
-      GitHub-hosted runners are "x86" and "x64". Default is "x64".'
+      'Architecture of Miniconda that should be installed. Default is "x64". It
+      is recommended to provide this value because the CPU architecture of the
+      runner is not detected by the workflow.'
     required: false
     default: "x64"
   clean-patched-environment-file:

src/constants.ts

@@ -17,10 +17,14 @@ export const MINICONDA_BASE_URL: string =
 
 /** Processor architectures supported by Miniconda */
 export const MINICONDA_ARCHITECTURES: types.IArchitectures = {
+  aarch64: "aarch64",
+  arm64: "arm64",
+  ppc64le: "ppc64le",
+  s390x: "s390x",
   x64: "x86_64",
+  x86_64: "x86_64",
   x86: "x86",
-  ARM64: "aarch64", // To be supported by github runners
-  ARM32: "armv7l", // To be supported by github runners
+  arm32: "armv7l", // To be supported by github runners
 };
 
 /** Processor architectures supported by Miniforge */

src/installer/download-miniconda.ts

@@ -47,10 +47,15 @@ export async function downloadMiniconda(
   inputs: types.IActionInputs
 ): Promise<string> {
   // Check valid arch
-  const arch: string = constants.MINICONDA_ARCHITECTURES[inputs.architecture];
+  let arch: string =
+    constants.MINICONDA_ARCHITECTURES[inputs.architecture.toLowerCase()];
   if (!arch) {
     throw new Error(`Invalid arch "${inputs.architecture}"!`);
   }
+  // Backwards compatibility: ARM64 used to map to aarch64
+  if (arch === "arm64" && constants.IS_LINUX) {
+    arch = constants.MINICONDA_ARCHITECTURES["aarch64"];
+  }
 
   let extension: string = constants.IS_UNIX ? "sh" : "exe";
   let osName: string = constants.OS_NAMES[process.platform];