drop deprecated JULIA_FFTW_PROVIDER

Author: marius311

.github/set_fftw_provider.jl

@@ -0,0 +1,8 @@
+#!/usr/bin/env julia 
+
+open(joinpath(dirname(@__DIR__), "test", "Project.toml"), "a") do io
+    println(io, """
+    [preferences.FFTW]
+    provider = "$(ARGS[1])"
+    """)
+end 

.github/workflows/runtests.yml

@@ -9,7 +9,7 @@ jobs:
       matrix:
         julia-version: ['1.6', '1.7.0-beta3']
         os: [ubuntu-latest]
-        JULIA_FFTW_PROVIDER: ['MKL','FFTW']
+        provider: ['mkl','fftw']
       fail-fast: false
     env:
       PYTHON: python3
@@ -22,8 +22,7 @@ jobs:
       - run: >
           sudo apt-get install --no-install-recommends gfortran python3-setuptools python3-wheel
           && pip3 install camb healpy
+      - run: julia --project .github/set_fftw_provider.jl "${{ matrix.provider }}"
       - uses: julia-actions/julia-runtest@master
         timeout-minutes: 20
         # continue-on-error: ${{ matrix.julia-version == '1.7-nightly' }}
-        env:
-          JULIA_FFTW_PROVIDER: ${{ matrix.JULIA_FFTW_PROVIDER }}

Project.toml

@@ -36,6 +36,7 @@ Memoization = "6fafb56a-5788-4b4e-91ca-c0cea6611c73"
 NamedTupleTools = "d9ec5142-1e00-5aa0-9d6a-321866360f50"
 Optim = "429524aa-4258-5aef-a3af-852621145aeb"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+Preferences = "21216c6a-2e73-6563-6e65-726566657250"
 Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
 ProgressMeter = "92933f4c-e287-5a05-a399-4b506db050ca"
 PyCall = "438e738f-606a-5dbb-bf0a-cddfbfd45ab0"
@@ -63,7 +64,7 @@ Combinatorics = "1"
 CompositeStructs = "0.1.1"
 DataStructures = "0.17.9, 0.18"
 EllipsisNotation = "1.1.0"
-FFTW = "1.2 - 1.3"
+FFTW = "1.4"
 FileIO = "1.2.2"
 Formatting = "0.4"
 ImageFiltering = "0.6.14"
@@ -81,6 +82,7 @@ Measurements = "2"
 Memoization = "0.1.8"
 NamedTupleTools = "0.13"
 Optim = "1"
+Preferences = "1.2"
 ProgressMeter = "1.2"
 PyCall = "1.91.2"
 QuadGK = "2.3.1"

src/util_fft.jl

@@ -33,7 +33,7 @@ m_irfft!(dst, arr::AbstractArray{Complex{T},N}, dims) where {T,N} = ldiv!(dst, m
 end
 # FFTW (but not MKL) destroys the input array for inplace inverse real
 # FFTs, so we need a copy. see https://github.com/JuliaMath/FFTW.jl/issues/158
-copy_if_fftw(x) = (x isa Array && FFTW.fftw_vendor == :fftw) ? copy(x) : x
+copy_if_fftw(x) = (x isa Array && FFTW.fftw_provider == "fftw") ? copy(x) : x
 
 
 """

test/runtests.jl

@@ -41,7 +41,7 @@ Nsides_big = [(128,128), (64,128), (128,64)]
 
 Random.seed!(1)
 
-has_batched_fft = (FFTW.fftw_vendor != :mkl) || (storage != Array)
+has_batched_fft = (FFTW.fftw_provider != "mkl") || (storage != Array)
 
 ##