Remote store

hnix-store-core/ChangeLog.md

@@ -1,10 +1,25 @@
 # Revision history for hnix-store-core
 
+## (unreleased) 0.3.0.0 -- 2020-XY-ZV
+
+* `StorePath` type changed to simple variant without type level
+symbolic store path root.
+* Added `makeFixedOutputPath` to `System.Nix.ReadonlyStore`
+* Added `decodeBase16` and `decodeBase32` to `System.Nix.Hash`
+* `System.Nix.StorePath` module now provides
+  * `storePathToFilePath` and `storePathToText` helpers
+  * `storePathToNarInfo` for converting paths to `narinfo` URLs
+  * `parsePath` function
+  * `pathParser` Attoparsec parser
+* Added `System.Nix.Build` module
+* Added `System.Nix.Derivation` module
+* Removed `System.Nix.Util` module, moved to `hnix-store-remote`
+
 ## 0.2.0.0 -- 2020-03-12
 
 Removed `System.Nix.Store`. We may reintroduce it later when multiple backends
 exist and we can tell what common effects they should share.
 
-## 0.1.0.0  -- YYYY-mm-dd
+## 0.1.0.0  -- 2019-03-18
 
 * First version.

hnix-store-core/hnix-store-core.cabal

@@ -11,13 +11,15 @@ license-file:        LICENSE
 author:              Shea Levy
 maintainer:          shea@shealevy.com
 copyright:           2018 Shea Levy
-category:            System
+category:            Nix
 build-type:          Simple
 extra-source-files:  ChangeLog.md, README.md
 cabal-version:       >=1.10
 
 library
   exposed-modules:     System.Nix.Base32
+                     , System.Nix.Build
+                     , System.Nix.Derivation
                      , System.Nix.Hash
                      , System.Nix.Internal.Base32
                      , System.Nix.Internal.Hash
@@ -28,8 +30,8 @@ library
                      , System.Nix.Signature
                      , System.Nix.StorePath
                      , System.Nix.StorePathMetadata
-                     , System.Nix.Util
   build-depends:       base >=4.10 && <5
+                     , attoparsec
                      , base16-bytestring
                      , bytestring
                      , binary
@@ -42,8 +44,7 @@ library
                      , filepath
                      , hashable
                      , mtl
-                     , regex-base
-                     , regex-tdfa >= 1.3.1.0
+                     , nix-derivation >= 1.1.1 && <2
                      , saltine
                      , time
                      , text
@@ -65,22 +66,27 @@ test-suite format-tests
    main-is: Driver.hs
    other-modules:
        Arbitrary
+       Derivation
        NarFormat
        Hash
+       StorePath
    hs-source-dirs:
        tests
    build-depends:
        hnix-store-core
+     , attoparsec
      , base
      , base16-bytestring
      , base64-bytestring
      , binary
      , bytestring
      , containers
+     , filepath
      , directory
      , process
      , tasty
      , tasty-discover
+     , tasty-golden
      , tasty-hspec
      , tasty-hunit
      , tasty-quickcheck

hnix-store-core/src/System/Nix/Build.hs

@@ -0,0 +1,55 @@
+{-# LANGUAGE RecordWildCards #-}
+{-|
+Description : Build related types
+Maintainer  : srk <srk@48.io>
+|-}
+module System.Nix.Build (
+    BuildMode(..)
+  , BuildStatus(..)
+  , BuildResult(..)
+  , buildSuccess
+  ) where
+
+import           Data.Time                 (UTCTime)
+import           Data.Text                 (Text)
+import           Data.HashSet              (HashSet)
+
+-- keep the order of these Enums to match enums from reference implementations
+-- src/libstore/store-api.hh
+data BuildMode = Normal | Repair | Check
+  deriving (Eq, Ord, Enum, Show)
+
+data BuildStatus =
+    Built
+  | Substituted
+  | AlreadyValid
+  | PermanentFailure
+  | InputRejected
+  | OutputRejected
+  | TransientFailure -- possibly transient
+  | CachedFailure    -- no longer used
+  | TimedOut
+  | MiscFailure
+  | DependencyFailed
+  | LogLimitExceeded
+  | NotDeterministic
+  deriving (Eq, Ord, Enum, Show)
+
+
+-- | Result of the build
+data BuildResult = BuildResult
+  { -- | build status, MiscFailure should be default
+    status             :: !BuildStatus
+  , -- | possible build error message
+    errorMessage       :: !(Maybe Text)
+  , -- | How many times this build was performed
+    timesBuilt         :: !Integer
+  , -- | If timesBuilt > 1, whether some builds did not produce the same result
+    isNonDeterministic :: !Bool
+  ,  -- Start time of this build
+    startTime          :: !UTCTime
+  ,  -- Stop time of this build
+    stopTime           :: !UTCTime
+  } deriving (Eq, Ord, Show)
+
+buildSuccess BuildResult{..} = status == Built || status == Substituted || status == AlreadyValid

hnix-store-core/src/System/Nix/Derivation.hs

@@ -0,0 +1,36 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module System.Nix.Derivation (
+    parseDerivation
+  , buildDerivation
+  ) where
+
+import Data.Attoparsec.Text.Lazy (Parser)
+import Data.ByteString (ByteString)
+import Data.Text (Text)
+import Data.Text.Lazy.Builder (Builder)
+import Nix.Derivation (Derivation)
+import System.Nix.StorePath (StorePath, pathParser)
+
+import qualified Data.ByteString.Char8
+import qualified Data.Text
+import qualified Data.Text.Lazy.Builder
+import qualified Data.Attoparsec.Text.Lazy
+
+import qualified Nix.Derivation
+import qualified System.Nix.StorePath
+
+parseDerivation :: FilePath -> Parser (Derivation StorePath Text)
+parseDerivation expectedRoot =
+  Nix.Derivation.parseDerivationWith
+    ("\"" *> System.Nix.StorePath.pathParser expectedRoot <* "\"")
+    Nix.Derivation.textParser
+
+buildDerivation :: Derivation StorePath Text -> Builder
+buildDerivation derivation =
+  Nix.Derivation.buildDerivationWith
+    (string . Data.Text.pack . show)
+    string
+    derivation
+  where
+    string = Data.Text.Lazy.Builder.fromText . Data.Text.pack . show