From 8eb7c9ad563096af7fc4acf256852575eb5a9096 Mon Sep 17 00:00:00 2001
From: Mark Kittisopikul <markkitt@gmail.com>
Date: Sat, 15 Jan 2022 18:51:50 -0500
Subject: [PATCH] Check if CONDA_JL_CONDA_EXE exists & executable. Install only
 in ROOTENV

---
 deps/build.jl | 11 +++++++++--
 src/Conda.jl  | 13 +++++--------
 2 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/deps/build.jl b/deps/build.jl
index ee9d005..d4b3634 100644
--- a/deps/build.jl
+++ b/deps/build.jl
@@ -79,13 +79,20 @@ if haskey(ENV, "CONDA_JL_CONDA_EXE")
         if uperm(CONDA_EXE) & 0x01 > 0
             @info "Executable conda located." CONDA_EXE
         else
-            error("$CONDA_EXE cannot be executed by the current user.")
+            error("CONDA_JL_CONDA_EXE, $CONDA_EXE, cannot be executed by the current user.")
         end
     else
-        error("$CONDA_EXE does not exist.")
+        error("CONDA_JL_CONDA_EXE, $CONDA_EXE, does not exist.")
+    end
+else
+    if !isfile(CONDA_EXE)
+        # An old CONDA_EXE has gone missing, revert to default in ROOTENV
+        @info "CONDA_EXE not found. Reverting to default in ROOTENV" CONDA_EXE ROOTENV
+        CONDA_EXE = DefaultDeps.default_conda_exe(ROOTENV)
     end
 end
 
+
 deps = """
 const ROOTENV = "$(escape_string(ROOTENV))"
 const MINICONDA_VERSION = "$(escape_string(MINICONDA_VERSION))"
diff --git a/src/Conda.jl b/src/Conda.jl
index 0d7c520..72f668a 100644
--- a/src/Conda.jl
+++ b/src/Conda.jl
@@ -189,24 +189,21 @@ _quiet() = get(ENV, "CI", "false") == "true" ? `-q` : ``
 "Install miniconda if it hasn't been installed yet; _install_conda(true) installs Conda even if it has already been installed."
 function _install_conda(env::Environment, force::Bool=false)
     if force || !isfile(Conda.conda)
-        # This assumes that the conda executable will in some directory under
-        # CONDA_EXE_PREFIX.
-        # Ex: If CONDA_EXE="$HOME/miniforge3/bin/conda", then CONDA_EXE_PREFIX="$HOME/miniforge3"
-        CONDA_EXE_PREFIX = conda |> dirname |> dirname
+        @assert startswith(abspath(Conda.conda), abspath(PREFIX)) "CONDA_EXE, $(conda), does not exist within $PREFIX"
         @info("Downloading miniconda installer ...")
         if Sys.isunix()
-            installer = joinpath(CONDA_EXE_PREFIX, "installer.sh")
+            installer = joinpath(PREFIX, "installer.sh")
         end
         if Sys.iswindows()
-            installer = joinpath(CONDA_EXE_PREFIX, "installer.exe")
+            installer = joinpath(PREFIX, "installer.exe")
         end
-        mkpath(CONDA_EXE_PREFIX)
+        mkpath(PREFIX)
         Downloads.download(_installer_url(), installer)
 
         @info("Installing miniconda ...")
         if Sys.isunix()
             chmod(installer, 33261)  # 33261 corresponds to 755 mode of the 'chmod' program
-            run(`$installer -b -f -p $CONDA_EXE_PREFIX`)
+            run(`$installer -b -f -p $PREFIX`)
         end
         if Sys.iswindows()
             run(Cmd(`$installer /S --no-shortcuts /NoRegistry=1 /AddToPath=0 /RegisterPython=0 /D=$PREFIX`, windows_verbatim=true))