we need to use absolute paths here, to prevent IndexStoreDB from crashing

Author: tayloraswift

Sources/SymbolGraphBuilder/Builds/SSGC.PackageBuild.swift

@@ -119,31 +119,18 @@ extension SSGC.PackageBuild
         as type:SSGC.ProjectType = .package,
         flags:Flags = .init()) -> Self
     {
+        /// The projects path could be absolute or relative. If it’s relative, we need to
+        /// convert it to an absolute path.
+        let projects:FilePath.Directory = projects.absolute()
         let project:FilePath.Directory = projects / "\(projectName)"
         let scratch:SSGC.PackageBuildDirectory = .init(configuration: .debug,
             location: project / scratchName)
 
-        if  project.path.isAbsolute
-        {
-            return .init(id: .unversioned(projectName),
-                scratch: scratch,
-                flags: flags,
-                root: project,
-                type: type)
-        }
-        else if
-            let current:FilePath.Directory = .current()
-        {
-            return .init(id: .unversioned(projectName),
-                scratch: scratch,
-                flags: flags,
-                root: .init(path: current.path.appending(project.path.components)),
-                type: type)
-        }
-        else
-        {
-            fatalError("Couldn’t determine the current working directory.")
-        }
+        return .init(id: .unversioned(projectName),
+            scratch: scratch,
+            flags: flags,
+            root: project,
+            type: type)
     }
 
     /// Clones or pulls the specified package from a git repository, checking out

Sources/SymbolGraphBuilder/Builds/SSGC.PackageBuildDirectory.swift

@@ -10,6 +10,15 @@ extension SSGC
 
         init(configuration:PackageBuildConfiguration, location:FilePath.Directory)
         {
+            guard location.path.isAbsolute
+            else
+            {
+                fatalError("""
+                    Package build directory must be an absolute path,
+                    for IndexStoreDB compatibility!
+                    """)
+            }
+
             self.configuration = configuration
             self.location = location
         }

Sources/SymbolGraphBuilder/Builds/SSGC.Workspace.swift

@@ -31,19 +31,7 @@ extension SSGC.Workspace
     private
     init(location:FilePath.Directory)
     {
-        if  location.path.isAbsolute
-        {
-            self.init(absolute: location)
-        }
-        else if
-            let current:FilePath.Directory = .current()
-        {
-            self.init(absolute: .init(path: current.path.appending(location.path.components)))
-        }
-        else
-        {
-            fatalError("Couldn’t determine the current working directory.")
-        }
+        self.init(absolute: location.absolute())
     }
 
     public static

Sources/SymbolGraphBuilder/FilePath (ext).swift

@@ -0,0 +1,21 @@
+import System
+
+extension FilePath
+{
+    func absolute() -> Self
+    {
+        if  self.isAbsolute
+        {
+            return self
+        }
+        else if
+            let current:FilePath.Directory = .current()
+        {
+            return current.path.appending(self.components)
+        }
+        else
+        {
+            fatalError("Couldn’t determine the current working directory!")
+        }
+    }
+}

Sources/SymbolGraphBuilder/FilePath.Directory (ext).swift

@@ -0,0 +1,7 @@
+import System
+
+extension FilePath.Directory
+{
+    func absolute() -> Self { .init(path: self.path.absolute()) }
+}
+