Move LinearAlgebra out of the system image.

base/client.jl

@@ -426,6 +426,22 @@ function load_InteractiveUtils(mod::Module=Main)
     return Core.eval(mod, :(using Base.MainInclude.InteractiveUtils; Base.MainInclude.InteractiveUtils))
 end
 
+function load_LinearAlgebra(mod::Module=Main)
+    # load LinearAlgebra stdlib
+    if !isdefined(MainInclude, :LinearAlgebra)
+        try
+            let  LinearAlgebra = Base.require_stdlib(Base.PkgId(Base.UUID((0x37e2e46d_f89d_539d,0xb4ee_838fcccc9c8e)), "LinearAlgebra"))
+                MainInclude.LinearAlgebra = LinearAlgebra
+            end
+        catch ex
+            @warn "Failed to import LinearAlgebra into module $mod" exception=(ex, catch_backtrace())
+            return nothing
+        end
+    end
+    Core._using(mod, MainInclude.LinearAlgebra)
+    return MainInclude.LinearAlgebra
+end
+
 function load_REPL()
     # load interactive-only libraries
     try
@@ -516,6 +532,7 @@ function run_main_repl(interactive::Bool, quiet::Bool, banner::Symbol, history_f
     fallback_repl = parse(Bool, get(ENV, "JULIA_FALLBACK_REPL", "false"))
     if !fallback_repl && interactive
         load_InteractiveUtils()
+        load_LinearAlgebra()
         REPL = REPL_MODULE_REF[]
         if REPL === Base
             load_REPL()

base/sysimg.jl

@@ -84,8 +84,8 @@ let
         stdlibs = [
             # No dependencies
             :FileWatching, # used by loading.jl -- implicit assumption that init runs
-            :Libdl, # Transitive through LinAlg
-            :Artifacts, # Transitive through LinAlg
+            :Libdl,
+            :Artifacts,
             :SHA, # transitive through Random
             :Sockets, # used by stream.jl
 
@@ -94,7 +94,7 @@ let
             # libblastrampoline_jll
 
             # 1-depth packages
-            :LinearAlgebra, # Commits type-piracy and GEMM
+            # :LinearAlgebra, # Commits type-piracy and GEMM
             :Random, # Can't be removed due to rand being exported by Base
         ]
     end

stdlib/REPL/src/REPL.jl

@@ -820,11 +820,12 @@ setmodifiers!(c::REPLCompletionProvider, m::LineEdit.Modifiers) = c.modifiers =
 Set `mod` as the default contextual module in the REPL,
 both for evaluating expressions and printing them.
 """
-function activate(mod::Module=Main; interactive_utils::Bool=true)
+function activate(mod::Module=Main; interactive_utils::Bool=true, linearalgebra::Bool=true)
     mistate = (Base.active_repl::LineEditREPL).mistate
     mistate === nothing && return nothing
     mistate.active_module = mod
     interactive_utils && Base.load_InteractiveUtils(mod)
+    linearalgebra && Base.load_LinearAlgebra(mod)
     return nothing
 end
 

stdlib/stdlib.mk

@@ -1,6 +1,5 @@
 STDLIBS_WITHIN_SYSIMG := \
-	Artifacts FileWatching Libdl SHA libblastrampoline_jll OpenBLAS_jll Random \
-	LinearAlgebra Sockets
+	Artifacts FileWatching Libdl SHA Random Sockets
 
 INDEPENDENT_STDLIBS := \
 	ArgTools Base64 CRC32c Dates DelimitedFiles Distributed Downloads Future \