72 lines
2.5 KiB
Text
72 lines
2.5 KiB
Text
/-
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Copyright (c) 2022 Mac Malone. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Authors: Mac Malone
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-/
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import Lake.Util.NativeLib
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import Lake.Config.InstallPath
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open System
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namespace Lake
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/-- The detected Lake environment. -/
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structure Env where
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lake : LakeInstall
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lean : LeanInstall
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leanPath : SearchPath
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leanSrcPath : SearchPath
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sharedLibPath : SearchPath
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deriving Inhabited, Repr
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namespace Env
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/-- Compute an `Lake.Env` object from the given installs and set environment variables. -/
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def compute (lake : LakeInstall) (lean : LeanInstall) : BaseIO Env :=
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return {
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lake, lean
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leanPath := ← getSearchPath "LEAN_PATH",
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leanSrcPath := ← getSearchPath "LEAN_SRC_PATH",
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sharedLibPath := ← getSearchPath sharedLibPathEnvVar
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}
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/-- Environment variable settings based only on the given Lean and Lake installations. -/
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def installVars (env : Env) : Array (String × Option String) :=
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#[
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("LAKE", env.lake.lake.toString),
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("LAKE_HOME", env.lake.home.toString),
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("LEAN_SYSROOT", env.lean.sysroot.toString),
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("LEAN_AR", env.lean.ar.toString),
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("LEAN_CC", env.lean.leanCc?)
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]
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/-- Environment variable settings for the `Lake.Env`. -/
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def vars (env : Env) : Array (String × Option String) :=
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env.installVars ++ #[
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("LEAN_PATH", some env.leanPath.toString),
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("LEAN_SRC_PATH", some env.leanSrcPath.toString),
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(sharedLibPathEnvVar, some env.sharedLibPath.toString)
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]
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/--
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The default search path the Lake executable
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uses when interpreting package configuration files.
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In order to use the Lean stdlib (e.g., `Init`),
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the executable needs the search path to include the directory
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with the stdlib's `.olean` files (e.g., from `<lean-sysroot>/lib/lean`).
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In order to use Lake's modules as well, the search path also
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needs to include Lake's `.olean` files (e.g., from `build`).
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While this can be done by having the user augment `LEAN_PATH` with
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the necessary directories, Lake also intelligently augments the initial
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search path with the `.olean` directories of the provided Lean and Lake
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installations.
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See `findInstall?` for more information on how Lake determines those
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directories. If everything is configured as expected, the user will not
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need to augment `LEAN_PATH`. Otherwise, they will need to provide Lake
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with more information (either through `LEAN_PATH` or through other options).
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-/
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def leanSearchPath (env : Lake.Env) : SearchPath :=
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env.lake.libDir :: env.lean.leanLibDir :: env.leanPath
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