Add activation command for micromamba

Author: hguandl

src/client/common/terminal/environmentActivationProviders/condaActivationProvider.ts

@@ -60,6 +60,11 @@ export class CondaActivationCommandProvider implements ITerminalActivationComman
 
         const condaEnv = envInfo.name.length > 0 ? envInfo.name : envInfo.path;
 
+        // Directly use the self-contained micromamba executable.
+        if (await this.condaService.isMicroMamba()) {
+            return [`micromamba activate ${condaEnv.toCommandArgumentForPythonExt()}`];
+        }
+
         // New version.
         const interpreterPath = await this.condaService.getInterpreterPathForEnvironment(envInfo);
         const activatePath = await this.condaService.getActivationScriptFromInterpreter(interpreterPath, envInfo.name);

src/client/interpreter/contracts.ts

@@ -62,6 +62,7 @@ export interface ICondaService {
     getCondaFile(forShellExecution?: boolean): Promise<string>;
     getCondaInfo(): Promise<CondaInfo | undefined>;
     isCondaAvailable(): Promise<boolean>;
+    isMicroMamba(): Promise<boolean>;
     getCondaVersion(): Promise<SemVer | undefined>;
     getInterpreterPathForEnvironment(condaEnv: CondaEnvironmentInfo): Promise<string | undefined>;
     getCondaFileFromInterpreter(interpreterPath?: string, envName?: string): Promise<string | undefined>;

src/client/pythonEnvironments/common/environmentManagers/condaService.ts

@@ -82,6 +82,15 @@ export class CondaService implements ICondaService {
             .catch(() => (this.isAvailable = false)); // eslint-disable-line no-return-assign
     }
 
+    /**
+     * Is the conda executable named "micromamba"?
+     */
+    public async isMicroMamba(): Promise<boolean> {
+        const file = await this.getCondaFile();
+        const name = path.basename(file, '.exe');
+        return name === 'micromamba';
+    }
+
     /**
      * Return the conda version.
      */