Add Linux support

.github/workflows/ci.yml

@@ -3,7 +3,7 @@
 # Category A (tools-version 6.2 + macOS 26 min): macos-26 + Swift 6.2
 # Category B (tools-version 6.2 + older macOS):  macos-15 + 6.2, macos-26 + 6.2
 # Category C (tools-version 6.0):                macos-15 + 6.1, macos-15 + 6.3, macos-26 + 6.3
-# Linux (if viable):                             ubuntu + Swift 6.1, ubuntu + Swift 6.3
+# Linux:                                          ubuntu + Swift 6.1, ubuntu + Swift 6.3
 #
 # When Swift 6.4 ships: bump 6.1→6.2 and 6.3→6.4 in Category C
 # When bumping tools-version to 6.2: drop 6.0/6.1, move to Category A or B
@@ -33,6 +33,10 @@ jobs:
             swift: "6.3"
           - os: macos-26
             swift: "6.3"
+          - os: ubuntu-latest
+            swift: "6.1"
+          - os: ubuntu-latest
+            swift: "6.3"
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v6
@@ -45,11 +49,10 @@ jobs:
         run: swift test -v
   lint:
     name: Run SwiftLint
-    runs-on: macos-latest
+    runs-on: ubuntu-latest
+    container: ghcr.io/realm/swiftlint:latest
     steps:
       - uses: actions/checkout@v6
-      - name: Install SwiftLint
-        run: brew install swiftlint
       - name: Run SwiftLint
         run: swiftlint --strict
   swift-format:

.github/workflows/doc.yml

@@ -17,7 +17,7 @@ concurrency:
 jobs:
   build:
     name: Generate Documentation
-    runs-on: macos-latest
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
       - uses: SwiftyLab/setup-swift@latest

Sources/SwiftNASR/Distribution/DirectoryDistribution.swift

@@ -48,7 +48,9 @@ public final class DirectoryDistribution: Distribution {
     do {
       handle = try FileHandle(forReadingFrom: fileURL)
     } catch let error as NSError {
-      if error.domain == NSCocoaErrorDomain && error.code == NSFileNoSuchFileError {
+      if error.domain == NSCocoaErrorDomain,
+        error.code == NSFileNoSuchFileError || error.code == NSFileReadNoSuchFileError
+      {
         throw Error.noSuchFile(path: path)
       }
       throw error
@@ -131,7 +133,9 @@ public final class DirectoryDistribution: Distribution {
         do {
           handle = try FileHandle(forReadingFrom: fileURL)
         } catch let error as NSError {
-          if error.domain == NSCocoaErrorDomain && error.code == NSFileNoSuchFileError {
+          if error.domain == NSCocoaErrorDomain,
+            error.code == NSFileNoSuchFileError || error.code == NSFileReadNoSuchFileError
+          {
             throw Error.noSuchFile(path: path)
           }
           throw error

Sources/SwiftNASR/Downloaders/ArchiveDataDownloader.swift

@@ -1,4 +1,7 @@
 import Foundation
+#if canImport(FoundationNetworking)
+  import FoundationNetworking
+#endif
 
 /**
  A downloader that downloads a distribution archive into memory. No data is

Sources/SwiftNASR/Downloaders/ArchiveFileDownloader.swift

@@ -1,4 +1,7 @@
 import Foundation
+#if canImport(FoundationNetworking)
+  import FoundationNetworking
+#endif
 
 /**
  A downloader that downloads a distribution archive to a file on disk.

Sources/SwiftNASR/Downloaders/Downloader.swift

@@ -1,4 +1,7 @@
 import Foundation
+#if canImport(FoundationNetworking)
+  import FoundationNetworking
+#endif
 
 /**
  A downloader is a class that can download a NASR distribution from the FAA's
@@ -37,7 +40,9 @@ public protocol Downloader: Loader {
   func load(withProgress progressHandler: @Sendable (Progress) -> Void) async throws -> Distribution
 }
 
-@objc
+#if canImport(Darwin)
+  @objc
+#endif
 final class DownloadDelegate: NSObject, URLSessionDownloadDelegate, Sendable {
   let progress = Progress(totalUnitCount: 0)