41 lines
1.5 KiB
Text
41 lines
1.5 KiB
Text
/-
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Copyright (c) 2021 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 Lean.Util.Path
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import Lake.Config.InstallPath
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open System
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namespace Lake
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/--
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Initializes the 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 setupLeanSearchPath
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(leanInstall? : Option LeanInstall) (lakeInstall? : Option LakeInstall)
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: IO Unit := do
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let mut sp : SearchPath := []
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sp ← Lean.addSearchPathFromEnv sp
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if let some leanInstall := leanInstall? then
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sp := leanInstall.oleanDir :: sp
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if let some lakeInstall := lakeInstall? then
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sp := lakeInstall.oleanDir :: sp
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Lean.searchPathRef.set sp
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