fix pip bad interpreter

hooks/pre_use.lua

@@ -0,0 +1,100 @@
+require("util")
+
+-- PreUse hook: Called before switching to a Python version
+-- This ensures the target version is healthy and has correct shebang lines
+function PLUGIN:PreUse(ctx)
+    -- Only process on Unix systems (Windows doesn't have shebang issues)
+    if OS_TYPE == "windows" then
+        return {
+            version = ctx.version
+        }
+    end
+
+    local version = ctx.version
+    local previousVersion = ctx.previousVersion
+    local scope = ctx.scope
+    local cwd = ctx.cwd
+    local installedSdks = ctx.installedSdks
+
+    print("Preparing Python " .. version .. " for use...")
+
+    -- Find the target version in installed versions
+    local targetVersion = nil
+    for versionKey, sdkInfo in pairs(installedSdks) do
+        if versionKey == version then
+            targetVersion = sdkInfo
+            break
+        end
+    end
+
+    if not targetVersion then
+        print("Warning: Target version " .. version .. " not found in installed versions")
+        return {
+            version = version
+        }
+    end
+
+    local installPath = targetVersion.path
+    print("Checking Python installation at: " .. installPath)
+
+    -- Perform health check
+    local healthReport = checkPythonHealth(installPath, version)
+
+    -- Report health status and fix if needed
+    local needsRecheck = false
+
+    if healthReport.overallHealth == "healthy" then
+        print("Python " .. version .. " is healthy and ready to use")
+    elseif healthReport.overallHealth == "warning" then
+        print("Python " .. version .. " has minor issues:")
+        for _, problem in ipairs(healthReport.problemsFound) do
+            print("  - " .. problem)
+        end
+        print("Attempting to fix issues...")
+
+        -- Fix shebang issues
+        local success, fixedCount = fixShebangForVersion(installPath, version)
+        if success and fixedCount > 0 then
+            print("Fixed " .. fixedCount .. " shebang issues")
+            needsRecheck = true
+        end
+    elseif healthReport.overallHealth == "critical" then
+        print("Python " .. version .. " has critical issues:")
+        for _, problem in ipairs(healthReport.problemsFound) do
+            print("  - " .. problem)
+        end
+
+        if #healthReport.problemsFound > 0 then
+            print("Attempting to fix critical issues...")
+            local success, fixedCount = fixShebangForVersion(installPath, version)
+            if success and fixedCount > 0 then
+                print("Fixed " .. fixedCount .. " critical issues")
+                needsRecheck = true
+            else
+                print("Some issues may require manual intervention")
+            end
+        end
+    end
+
+    -- Only perform final health check if we made fixes
+    if needsRecheck then
+        print("Verifying fixes...")
+        local finalHealthReport = checkPythonHealth(installPath, version)
+        if finalHealthReport.overallHealth == "healthy" then
+            print("Python " .. version .. " is now ready for use")
+        else
+            print("Python " .. version .. " still has some issues but should be usable")
+            if #finalHealthReport.problemsFound > 0 then
+                print("Remaining issues:")
+                for _, problem in ipairs(finalHealthReport.problemsFound) do
+                    print("  - " .. problem)
+                end
+            end
+        end
+    end
+
+    -- Return the version in the correct format
+    return {
+        version = version
+    }
+end