Add -Login startup option

package.json

@@ -550,6 +550,16 @@
           "description": "Specifies whether you should be prompted to update your version of PowerShell.",
           "default": true
         },
+        "powershell.startAsLoginShell.osx": {
+          "type": "boolean",
+          "default": true,
+          "description": "Starts the PowerShell extension's underlying PowerShell process as a login shell, if applicable."
+        },
+        "powershell.startAsLoginShell.linux": {
+          "type": "boolean",
+          "default": false,
+          "description": "Starts the PowerShell extension's underlying PowerShell process as a login shell, if applicable."
+        },
         "powershell.startAutomatically": {
           "type": "boolean",
           "default": true,
@@ -735,11 +745,6 @@
           "type": "array",
           "default": null,
           "description": "An array of strings that enable experimental features in the PowerShell extension."
-        },
-        "powershell.developer.powerShellExeIsWindowsDevBuild": {
-          "type": "boolean",
-          "default": false,
-          "description": "Indicates that the powerShellExePath points to a developer build of Windows PowerShell and configures it for development."
         }
       }
     },

src/process.ts

@@ -63,10 +63,19 @@ export class PowerShellProcess {
                         this.startArgs += "-UseLegacyReadLine";
                     }
 
-                    const powerShellArgs = [
-                        "-NoProfile",
-                        "-NonInteractive",
-                    ];
+                    const powerShellArgs = [];
+
+                    const useLoginShell: boolean =
+                        (utils.isMacOS && this.sessionSettings.startAsLoginShell.osx)
+                        || (utils.isLinux && this.sessionSettings.startAsLoginShell.linux);
+
+                    if (useLoginShell && this.isLoginShell(this.exePath)) {
+                        // This MUST be the first argument.
+                        powerShellArgs.push("-Login");
+                    }
+
+                    powerShellArgs.push("-NoProfile");
+                    powerShellArgs.push("-NonInteractive");
 
                     // Only add ExecutionPolicy param on Windows
                     if (utils.isWindows) {
@@ -88,27 +97,11 @@ export class PowerShellProcess {
                             Buffer.from(startEditorServices, "utf16le").toString("base64"));
                     }
 
-                    let powerShellExePath = this.exePath;
-
-                    if (this.sessionSettings.developer.powerShellExeIsWindowsDevBuild) {
-                        // Windows PowerShell development builds need the DEVPATH environment
-                        // variable set to the folder where development binaries are held
-
-                        // NOTE: This batch file approach is needed temporarily until VS Code's
-                        // createTerminal API gets an argument for setting environment variables
-                        // on the launched process.
-                        const batScriptPath = path.resolve(__dirname, "../../sessions/powershell.bat");
-                        fs.writeFileSync(
-                            batScriptPath,
-                            `@set DEVPATH=${path.dirname(powerShellExePath)}\r\n@${powerShellExePath} %*`);
-
-                        powerShellExePath = batScriptPath;
-                    }
-
                     this.log.write(
                         "Language server starting --",
-                        "    exe: " + powerShellExePath,
-                        "    args: " + startEditorServices);
+                        "    PowerShell executable: " + this.exePath,
+                        "    PowerShell args: " + powerShellArgs.join(" "),
+                        "    PowerShell Editor Services args: " + startEditorServices);
 
                     // Make sure no old session file exists
                     utils.deleteSessionFile(this.sessionFilePath);
@@ -117,7 +110,7 @@ export class PowerShellProcess {
                     this.consoleTerminal =
                         vscode.window.createTerminal(
                             this.title,
-                            powerShellExePath,
+                            this.exePath,
                             powerShellArgs);
 
                     if (this.sessionSettings.integratedConsole.showOnStartup) {
@@ -178,4 +171,18 @@ export class PowerShellProcess {
             this.consoleTerminal = undefined;
         }
     }
+
+    private isLoginShell(pwshPath: string): boolean {
+        try {
+            // We can't know what version of PowerShell we have without running it
+            // So we try to start PowerShell with -Login
+            // If it exits successfully, we return true
+            // If it exits unsuccessfully, node throws, we catch, and return false
+            cp.execFileSync(pwshPath, ["-Login", "-NoProfile", "-NoLogo", "-Command", "exit 0"]);
+        } catch {
+            return false;
+        }
+
+        return true;
+    }
 }

src/settings.ts

@@ -72,7 +72,6 @@ export interface IDeveloperSettings {
     bundledModulesPath?: string;
     editorServicesLogLevel?: string;
     editorServicesWaitForDebugger?: boolean;
-    powerShellExeIsWindowsDevBuild?: boolean;
 }
 
 export interface ISettings {
@@ -82,6 +81,7 @@ export interface ISettings {
     powerShellExePath?: string;
     promptToUpdatePowerShell?: boolean;
     bundledModulesPath?: string;
+    startAsLoginShell?: IStartAsLoginShellSettings;
     startAutomatically?: boolean;
     useX86Host?: boolean;
     enableProfileLoading?: boolean;
@@ -96,6 +96,11 @@ export interface ISettings {
     sideBar?: ISideBarSettings;
 }
 
+export interface IStartAsLoginShellSettings {
+    osx?: boolean;
+    linux?: boolean;
+}
+
 export interface IIntegratedConsoleSettings {
     showOnStartup?: boolean;
     focusConsoleOnExecute?: boolean;
@@ -130,7 +135,6 @@ export function load(): ISettings {
         bundledModulesPath: "../../../PowerShellEditorServices/module",
         editorServicesLogLevel: "Normal",
         editorServicesWaitForDebugger: false,
-        powerShellExeIsWindowsDevBuild: false,
     };
 
     const defaultCodeFoldingSettings: ICodeFoldingSettings = {
@@ -156,6 +160,11 @@ export function load(): ISettings {
         useCorrectCasing: false,
     };
 
+    const defaultStartAsLoginShellSettings: IStartAsLoginShellSettings = {
+        osx: true,
+        linux: false,
+    };
+
     const defaultIntegratedConsoleSettings: IIntegratedConsoleSettings = {
         showOnStartup: true,
         focusConsoleOnExecute: true,
@@ -202,6 +211,13 @@ export function load(): ISettings {
             configuration.get<IBugReportingSettings>("bugReporting", defaultBugReportingSettings),
         sideBar:
             configuration.get<ISideBarSettings>("sideBar", defaultSideBarSettings),
+        startAsLoginShell:
+            // tslint:disable-next-line
+            // We follow the same convention as VS Code - https://github.com/microsoft/vscode/blob/ff00badd955d6cfcb8eab5f25f3edc86b762f49f/src/vs/workbench/contrib/terminal/browser/terminal.contribution.ts#L105-L107
+            //   "Unlike on Linux, ~/.profile is not sourced when logging into a macOS session. This
+            //   is the reason terminals on macOS typically run login shells by default which set up
+            //   the environment. See http://unix.stackexchange.com/a/119675/115410"
+            configuration.get<IStartAsLoginShellSettings>("startAsLoginShell", defaultStartAsLoginShellSettings),
     };
 }