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Chris Penner 2024-07-08 10:43:29 -07:00
parent 0cea9d6d76
commit 5e775ccf7b
1 changed files with 6 additions and 2 deletions
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8
parser-typechecker/src/Unison/Codebase/SqliteCodebase/Migrations/MigrateSchema16To17.hs
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@ -34,8 +34,12 @@ import UnliftIO qualified as UnsafeIO
-- | This migration converts the codebase from having all projects in a single codebase root to having separate causal
-- roots for each project branch.
-- It:
-- * adds a new table to the schema, `currentProjectPath`, and sets it to contain the path to the scratch project.
-- * Adds the causal_hash_id column to the project_branch table.
--
-- * Adds the new project reflog table
-- * Adds the project-branch head as a causal-hash-id column on the project-branch table, and populates it from all the projects in the project root.
-- * Makes a new legacy project from the existing root branch (minus .__projects)
-- * Adds a new scratch/main project
-- * Adds a currentProjectPath table to replace the most-recent-path functionality.
--
-- It requires a Connection argument rather than working inside a Transaction because it needs to temporarily disable
-- foreign key checking, and the foreign_key pragma cannot be set within a transaction.