non-sendable result type 'NSRunningApplication' cannot be sent from nonisolated context in call to instance method 'openApplication(at:configuration:)'

[henrythe9th]

trying to build the SDK and running into the following:
swift version 6.1
MacOS Sonoma 14.4

swift build
Building for debugging...
/Users/xxxxxx/code/MacosUseSDK/Sources/MacosUseSDK/AppOpener.swift:168:58: error: non-sendable result type 'NSRunningApplication' cannot be sent from nonisolated context in call to instance method 'openApplication(at:configuration:)'
166 | 
167 |         do {
168 |             let runningApplication = try await workspace.openApplication(at: finalAppURL, configuration: configuration)
    |                                                          `- error: non-sendable result type 'NSRunningApplication' cannot be sent from nonisolated context in call to instance method 'openApplication(at:configuration:)'
169 |             logStepCompletion("opening/activating application async call completed") // Call method
170 | 

/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSRunningApplication.h:63:12: note: class 'NSRunningApplication' does not conform to the 'Sendable' protocol
 61 | */
 62 | API_AVAILABLE(macos(10.6))
 63 | @interface NSRunningApplication : NSObject
    |            `- note: class 'NSRunningApplication' does not conform to the 'Sendable' protocol
 64 | 
 65 | /// Indicates that the process is an exited application.

[m13v]

which IDE you are building it in? e.g. don't use xcode

[m13v]

i also fixed specifically the potential reason for the error you are seeing so try to git pull and rerun

[henrythe9th]

just running swift build, not using xcode

unfortunately still getting the same error after pulling latest main

swift build         
[1/1] Planning build
Building for debugging...
/Users/xxxxxx/code/MacosUseSDK/Sources/MacosUseSDK/AppOpener.swift:169:50: error: non-sendable result type 'NSRunningApplication' cannot be sent from nonisolated context in call to instance method 'openApplication(at:configuration:)'
167 |         do {
168 |             // Await the async call
169 |             let runningApp = try await workspace.openApplication(at: finalAppURL, configuration: configuration)
    |                                                  `- error: non-sendable result type 'NSRunningApplication' cannot be sent from nonisolated context in call to instance method 'openApplication(at:configuration:)'
170 |             // Immediately extract the Sendable PID on the main actor after the await completes
171 |             let pidAfterOpen = runningApp.processIdentifier

/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSRunningApplication.h:63:12: note: class 'NSRunningApplication' does not conform to the 'Sendable' protocol
 61 | */
 62 | API_AVAILABLE(macos(10.6))
 63 | @interface NSRunningApplication : NSObject
    |            `- note: class 'NSRunningApplication' does not conform to the 'Sendable' protocol
 64 | 
 65 | /// Indicates that the process is an exited application.
[4/22] Compiling MacosUseSDK AppOpener.swift

[m13v]

ok, strange, i wonder why i can't reproduce it. I pushed an update, can you pull it and run again. also can you tell me your swift version: 'swift -v' so run git pull swift package clean swift build

…

On Tue, Apr 15, 2025 at 2:20 PM Henry Shi ***@***.***> wrote: just running swift build, not using xcode unfortunately still getting the same error after pulling latest main swift build [1/1] Planning build Building for debugging... /Users/xxxxxx/code/MacosUseSDK/Sources/MacosUseSDK/AppOpener.swift:169:50: error: non-sendable result type 'NSRunningApplication' cannot be sent from nonisolated context in call to instance method 'openApplication(at:configuration:)' 167 | do { 168 | // Await the async call 169 | let runningApp = try await workspace.openApplication(at: finalAppURL, configuration: configuration) | `- error: non-sendable result type 'NSRunningApplication' cannot be sent from nonisolated context in call to instance method 'openApplication(at:configuration:)' 170 | // Immediately extract the Sendable PID on the main actor after the await completes 171 | let pidAfterOpen = runningApp.processIdentifier /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSRunningApplication.h:63:12: note: class 'NSRunningApplication' does not conform to the 'Sendable' protocol 61 | */ 62 | API_AVAILABLE(macos(10.6)) 63 | @interface NSRunningApplication : NSObject | `- note: class 'NSRunningApplication' does not conform to the 'Sendable' protocol 64 | 65 | /// Indicates that the process is an exited application. [4/22] Compiling MacosUseSDK AppOpener.swift — Reply to this email directly, view it on GitHub <#2 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AY62CDEVROUEXJUNHMYXMAL2ZVZ2DAVCNFSM6AAAAAB3BW3L36VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDQMBXGU2DKNJTGM> . You are receiving this because you commented.Message ID: ***@***.***> *henrythe9th* left a comment (mediar-ai/MacosUseSDK#2) <#2 (comment)> just running swift build, not using xcode unfortunately still getting the same error after pulling latest main swift build [1/1] Planning build Building for debugging... /Users/xxxxxx/code/MacosUseSDK/Sources/MacosUseSDK/AppOpener.swift:169:50: error: non-sendable result type 'NSRunningApplication' cannot be sent from nonisolated context in call to instance method 'openApplication(at:configuration:)' 167 | do { 168 | // Await the async call 169 | let runningApp = try await workspace.openApplication(at: finalAppURL, configuration: configuration) | `- error: non-sendable result type 'NSRunningApplication' cannot be sent from nonisolated context in call to instance method 'openApplication(at:configuration:)' 170 | // Immediately extract the Sendable PID on the main actor after the await completes 171 | let pidAfterOpen = runningApp.processIdentifier /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSRunningApplication.h:63:12: note: class 'NSRunningApplication' does not conform to the 'Sendable' protocol 61 | */ 62 | API_AVAILABLE(macos(10.6)) 63 | @interface NSRunningApplication : NSObject | `- note: class 'NSRunningApplication' does not conform to the 'Sendable' protocol 64 | 65 | /// Indicates that the process is an exited application. [4/22] Compiling MacosUseSDK AppOpener.swift — Reply to this email directly, view it on GitHub <#2 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AY62CDEVROUEXJUNHMYXMAL2ZVZ2DAVCNFSM6AAAAAB3BW3L36VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDQMBXGU2DKNJTGM> . You are receiving this because you commented.Message ID: ***@***.***>

[henrythe9th]

unfortunately still the same error. Swift 6.1

[m13v]

well, i tried a few changes, try to pull and clean and run again (on MacosUseSDK repo) but i failed to build it myself of 6.1, and i can't even debug because there is no proper commind line tool released by aply yet, i strongly recommend to downgrading to 6.0.2 to resolve this by running: sudo xcode-select -s /Applications/Xcode.app/Contents/Developer then verify: xcode-select -p then start a new terminal and run swift --version ALTERNATIVELY, i included the built for the mcp-server, so you can simply git pull the newest mcp-server repo (mcp-server-macos-use) and include this path into Claude Desktop config <path_where_they_cloned_the_repo>/mcp-server-macos-use/.build/arm64-apple-macosx/debug/mcp-server-macos-use for example "mcpServers": { "mcp-server-macos-use": { "command": "/Users/matthewdi/Desktop/screenpipe/mcp-server-macos-use/.build/arm64-apple-macosx/debug/mcp-server-macos-use" }, DISCLAIMER: i asume you have arm64 Matt

…

On Tue, Apr 15, 2025 at 2:35 PM Henry Shi ***@***.***> wrote: unfortunately still the same error. Swift 6.1 — Reply to this email directly, view it on GitHub <#2 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AY62CDD5PBGM7MXZCT5I74T2ZV3TRAVCNFSM6AAAAAB3BW3L36VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDQMBXGU3TSMRSGI> . You are receiving this because you commented.Message ID: ***@***.***> *henrythe9th* left a comment (mediar-ai/MacosUseSDK#2) <#2 (comment)> unfortunately still the same error. Swift 6.1 — Reply to this email directly, view it on GitHub <#2 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AY62CDD5PBGM7MXZCT5I74T2ZV3TRAVCNFSM6AAAAAB3BW3L36VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDQMBXGU3TSMRSGI> . You are receiving this because you commented.Message ID: ***@***.***>