Alsa replacement for Mac

[gsavini]

I'm trying to install ALSA on Mac:

$ opam install alsa                   
[ERROR] Package conflict!
  * No agreement on the version of ocaml:
    - (invariant) → ocaml-base-compiler = 4.14.1 → ocaml = 4.14.1
    - alsa → ocaml < 4.04.0
    You can temporarily relax the switch invariant with `--update-invariant'
  * No agreement on the version of ocaml-base-compiler:
    - (invariant) → ocaml-base-compiler = 4.14.1
    - alsa → ocaml < 4.04.0 → ocaml-base-compiler < 3.07+1
  * Missing dependency:
    - alsa → ocaml < 4.04.0 → ocaml-variants >= 3.10.0 → ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'

On https://opam.ocaml.org/packages/alsa/alsa.0.3.0/ I see that it's available only on Linux. What is the best Alsa replacement for Mac?

[toots]

Hi,

Alsa is the Avanced Linux Sound Architecture so it only exists on linux.

For macos, you can use output.ao for a simple output. For an input, I'd be tempted to look at pulseaudio

[gsavini]

The odd thing is that opam lets me install an older version of alsa with all the relative downgrades.

[toots]

Did it finish? It's probably a package with the wrong dependencies that wouldn't compile..

[gsavini]

It didn't finish.

$ opam switch create temp 4.14.1

$ opam install liquidsoap
The following actions will be performed:
  ∗ install seq                 base     [required by gen]
  ∗ install ocamlbuild          0.14.2   [required by uchar]
  ∗ install conf-pkg-config     2        [required by liquidsoap]
  ∗ install ocamlfind           1.9.5    [required by liquidsoap]
  ∗ install conf-which          1        [required by liquidsoap]
  ∗ install conf-libcurl        2        [required by ocurl]
  ∗ install dune                3.6.2    [required by sedlex, menhir, dtools, etc.]
  ∗ install uchar               0.0.2    [required by sedlex]
  ∗ install conf-libpcre        1        [required by pcre]
  ∗ install base-bytes          base     [required by gen]
  ∗ install ocurl               0.9.2    [required by liquidsoap]
  ∗ install stringext           1.6.0    [required by uri]
  ∗ install stdlib-shims        0.3.0    [required by ppxlib]
  ∗ install sexplib0            v0.15.1  [required by ppxlib]
  ∗ install result              1.5      [required by angstrom]
  ∗ install ppx_derivers        1.2.1    [required by ppxlib]
  ∗ install ocaml-syntax-shims  1.0.0    [required by angstrom]
  ∗ install ocaml-compiler-libs v0.12.4  [required by ppxlib]
  ∗ install menhirSdk           20220210 [required by menhir]
  ∗ install menhirLib           20220210 [required by menhir]
  ∗ install dtools              0.4.4    [required by liquidsoap]
  ∗ install csexp               1.5.1    [required by dune-configurator]
  ∗ install camomile            1.0.2    [required by liquidsoap]
  ∗ install bigstringaf         0.9.0    [required by angstrom]
  ∗ install ppxlib              0.28.0   [required by sedlex]
  ∗ install menhir              20220210 [required by liquidsoap]
  ∗ install dune-configurator   3.6.2    [required by mm]
  ∗ install angstrom            0.15.0   [required by uri]
  ∗ install pcre                7.5.0    [required by liquidsoap]
  ∗ install mm                  0.8.1    [required by liquidsoap]
  ∗ install gen                 1.0      [required by sedlex]
  ∗ install uri                 4.2.0    [required by liquidsoap]
  ∗ install duppy               0.9.2    [required by liquidsoap]
  ∗ install sedlex              3.0      [required by liquidsoap]
  ∗ install liquidsoap          2.1.3
===== ∗ 35 =====

$ opam install alsa

[ERROR] Package conflict!
  * No agreement on the version of ocaml:
    - (invariant) → ocaml-base-compiler = 4.14.1 → ocaml = 4.14.1
    - alsa → ocaml < 4.04.0
    You can temporarily relax the switch invariant with `--update-invariant'
  * No agreement on the version of ocaml-base-compiler:
    - (invariant) → ocaml-base-compiler = 4.14.1
    - alsa → ocaml < 4.04.0 → ocaml-base-compiler < 3.07+1
  * Missing dependency:
    - alsa → ocaml < 4.04.0 → ocaml-variants >= 3.10.0 → ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'

No solution found, exiting

$ opam install alsa --update-invariant
The following actions will be performed:
  ∗ install   ocaml-secondary-compiler 4.08.1-1          [required by
                                                         ocamlfind-secondary]
  ⊘ remove    ppxlib                   0.28.0            [conflicts with ocaml]
  ↘ downgrade ocaml-base-compiler      4.14.1 to 4.03.0  [required by ocaml]
  ⊘ remove    sexplib0                 v0.15.1           [conflicts with ocaml]
  ↘ downgrade ocaml-config             2 to 1            [required by ocaml]
  ↘ downgrade ocaml                    4.14.1 to 4.03.0  [required by alsa]
  ∗ install   jbuilder                 1.0+beta20.2      [required by
                                                         ocaml-compiler-libs]
  ↻ recompile ocamlbuild               0.14.2            [uses ocaml]
  ↘ downgrade ocamlfind                1.9.5 to 1.9.1    [required by alsa]
  ↘ downgrade ocaml-compiler-libs      v0.12.4 to v0.9.0 [uses ocaml]
  ↻ recompile uchar                    0.0.2             [uses ocaml]
  ∗ install   ocamlfind-secondary      1.9.1             [required by dune]
  ∗ install   alsa                     0.2.2
  ↻ recompile ocurl                    0.9.2             [uses ocaml]
  ↻ recompile base-bytes               base              [uses ocaml]
  ↘ downgrade dtools                   0.4.4 to 0.4.1    [uses ocaml]
  ↻ recompile dune                     3.6.2             [uses ocaml]
  ↘ downgrade mm                       0.8.1 to 0.4.1    [uses alsa]
  ↘ downgrade pcre                     7.5.0 to 7.2.3    [uses ocaml]
  ∗ install   bigarray-compat          1.1.0             [required by bigstringaf]
  ↻ recompile stringext                1.6.0             [uses ocaml]
  ↻ recompile stdlib-shims             0.3.0             [uses ocaml]
  ↻ recompile result                   1.5               [uses ocaml]
  ↻ recompile ppx_derivers             1.2.1             [uses ocaml]
  ↻ recompile ocaml-syntax-shims       1.0.0             [uses ocaml]
  ↻ recompile menhirSdk                20220210          [uses ocaml]
  ↻ recompile menhirLib                20220210          [uses ocaml]
  ↻ recompile csexp                    1.5.1             [uses ocaml]
  ↻ recompile camomile                 1.0.2             [uses ocaml]
  ↘ downgrade seq                      base to 0.3.1     [uses ocaml]
  ↘ downgrade duppy                    0.9.2 to 0.8.0    [uses ocaml]
  ↘ downgrade bigstringaf              0.9.0 to 0.8.0    [uses ocaml]
  ∗ install   ocaml-migrate-parsetree  1.8.0             [required by sedlex]
  ↻ recompile menhir                   20220210          [uses ocaml]
  ↘ downgrade dune-configurator        3.6.2 to 2.9.3    [uses ocaml]
  ∗ install   re                       1.10.4            [required by uri]
  ↘ downgrade liquidsoap               2.1.3 to 1.3.7    [uses alsa]
  ↘ downgrade angstrom                 0.15.0 to 0.12.1  [uses ocaml]
  ∗ install   ppx_tools_versioned      5.2.3             [required by sedlex]
  ↻ recompile gen                      1.0               [uses ocaml]
  ↘ downgrade uri                      4.2.0 to 1.3.12   [uses ocaml]
  ↘ downgrade sedlex                   3.0 to 2.2        [uses ocaml]
===== ∗ 8   ↻ 16   ↘ 16   ⊘ 2 =====
Do you want to continue? [Y/n] y

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><>  🐫 
⬇ retrieved bigarray-compat.1.1.0  (https://opam.ocaml.org/cache)
⬇ retrieved alsa.0.2.2  (https://opam.ocaml.org/cache)
⬇ retrieved angstrom.0.12.1  (https://opam.ocaml.org/cache)
⬇ retrieved csexp.1.5.1  (cached)
⬇ retrieved bigstringaf.0.8.0  (https://opam.ocaml.org/cache)
⬇ retrieved dtools.0.4.1  (https://opam.ocaml.org/cache)
⬇ retrieved camomile.1.0.2  (cached)
⬇ retrieved dune.3.6.2  (cached)
⬇ retrieved dune-configurator.2.9.3  (https://opam.ocaml.org/cache)
⬇ retrieved gen.1.0  (cached)
⬇ retrieved duppy.0.8.0  (https://opam.ocaml.org/cache)
⬇ retrieved liquidsoap.2.1.3  (cached)
⬇ retrieved menhir.20220210  (cached)
⬇ retrieved liquidsoap.1.3.7  (https://opam.ocaml.org/cache)
⬇ retrieved menhirLib.20220210  (cached)
⬇ retrieved menhirSdk.20220210  (cached)
⬇ retrieved jbuilder.1.0+beta20.2  (https://opam.ocaml.org/cache)
⬇ retrieved ocaml-base-compiler.4.03.0  (cached)
⬇ retrieved ocaml-compiler-libs.v0.9.0  (https://opam.ocaml.org/cache)
⬇ retrieved mm.0.4.1  (https://opam.ocaml.org/cache)
⬇ retrieved ocaml-migrate-parsetree.1.8.0  (https://opam.ocaml.org/cache)
⬇ retrieved ocaml-syntax-shims.1.0.0  (cached)
⬇ retrieved ocamlbuild.0.14.2  (cached)
⬇ retrieved ocamlfind.1.9.1  (https://opam.ocaml.org/cache)
⬇ retrieved ocurl.0.9.2  (cached)
⬇ retrieved pcre.7.2.3  (https://opam.ocaml.org/cache)
⬇ retrieved ppx_derivers.1.2.1  (cached)
⬇ retrieved ocamlfind-secondary.1.9.1  (https://opam.ocaml.org/cache)
⬇ retrieved ppx_tools_versioned.5.2.3  (https://opam.ocaml.org/cache)
⬇ retrieved result.1.5  (cached)
⬇ retrieved ocaml-secondary-compiler.4.08.1-1  (https://opam.ocaml.org/cache)
⬇ retrieved seq.0.3.1  (https://opam.ocaml.org/cache)
⬇ retrieved sedlex.2.2  (https://opam.ocaml.org/cache)
⬇ retrieved stdlib-shims.0.3.0  (cached)
⬇ retrieved stringext.1.6.0  (cached)
⬇ retrieved uchar.0.0.2  (cached)
⬇ retrieved re.1.10.4  (https://opam.ocaml.org/cache)
⬇ retrieved uri.1.3.12  (https://opam.ocaml.org/cache)
∗ installed ocaml-secondary-compiler.4.08.1-1
⊘ removed   liquidsoap.2.1.3
⊘ removed   camomile.1.0.2
⊘ removed   dtools.0.4.4
⊘ removed   duppy.0.9.2
⊘ removed   menhir.20220210
⊘ removed   menhirLib.20220210
⊘ removed   menhirSdk.20220210
⊘ removed   mm.0.8.1
⊘ removed   ocurl.0.9.2
⊘ removed   pcre.7.5.0
⊘ removed   sedlex.3.0
⊘ removed   gen.1.0
⊘ removed   base-bytes.base
⊘ removed   dune-configurator.3.6.2
⊘ removed   csexp.1.5.1
⊘ removed   ocamlfind.1.9.5
⊘ removed   ppxlib.0.28.0
⊘ removed   ocaml-compiler-libs.v0.12.4
⊘ removed   ppx_derivers.1.2.1
⊘ removed   seq.base
⊘ removed   sexplib0.v0.15.1
⊘ removed   stdlib-shims.0.3.0
⊘ removed   uchar.0.0.2
⊘ removed   ocamlbuild.0.14.2
⊘ removed   uri.4.2.0
⊘ removed   angstrom.0.15.0
⊘ removed   bigstringaf.0.9.0
⊘ removed   ocaml-syntax-shims.1.0.0
⊘ removed   result.1.5
⊘ removed   stringext.1.6.0
⊘ removed   dune.3.6.2
⊘ removed   ocaml.4.14.1
⊘ removed   ocaml-config.2
[NOTE] While removing ocaml-base-compiler.4.14.1: not removing non-empty directories:
         - share

⊘ removed   ocaml-base-compiler.4.14.1
∗ installed ocaml-base-compiler.4.03.0
∗ installed ocaml-config.1
∗ installed ocaml.4.03.0
∗ installed ocamlbuild.0.14.2
∗ installed uchar.0.0.2
∗ installed ocamlfind.1.9.1
∗ installed base-bytes.base
∗ installed jbuilder.1.0+beta20.2
∗ installed ocamlfind-secondary.1.9.1
∗ installed ocaml-compiler-libs.v0.9.0
[ERROR] The compilation of alsa.0.2.2 failed at "./configure --prefix
        ~/.opam/temp".
∗ installed dtools.0.4.1
∗ installed pcre.7.2.3
∗ installed duppy.0.8.0
∗ installed dune.3.6.2
∗ installed csexp.1.5.1
∗ installed bigarray-compat.1.1.0
∗ installed ppx_derivers.1.2.1
∗ installed result.1.5
∗ installed menhirSdk.20220210
∗ installed seq.0.3.1
∗ installed bigstringaf.0.8.0
∗ installed ocaml-syntax-shims.1.0.0
∗ installed menhirLib.20220210
∗ installed stdlib-shims.0.3.0
∗ installed angstrom.0.12.1
∗ installed stringext.1.6.0
∗ installed re.1.10.4
∗ installed dune-configurator.2.9.3
∗ installed gen.1.0
∗ installed ocurl.0.9.2
∗ installed uri.1.3.12
∗ installed camomile.1.0.2
∗ installed ocaml-migrate-parsetree.1.8.0
∗ installed ppx_tools_versioned.5.2.3
∗ installed sedlex.2.2
∗ installed menhir.20220210

#=== ERROR while compiling alsa.0.2.2 =========================================#
# context     2.1.4 | macos/x86_64 | ocaml-base-compiler.4.03.0 | https://opam.ocaml.org#ed47929e
# path        ~/.opam/temp/.opam-switch/build/alsa.0.2.2
# command     ~/.opam/opam-init/hooks/sandbox.sh build ./configure --prefix ~/.opam/temp
# exit-code   1
# env-file    ~/.opam/log/alsa-31296-694d41.env
# output-file ~/.opam/log/alsa-31296-694d41.out
### output ###
# [...]
# checking for camlp4oof... no
# checking for camlp4orf... no
# checking for camlp4prof... no
# checking for camlp4r... no
# checking for camlp4rf... no
# checking for ocamlfind... ocamlfind
# checking for ocaml standard library path... ~/.opam/temp/lib/ocaml
# checking for caml/threads.h... no
# checking for gcc option to produce PIC... -fno-common
# checking for pkg-config... /usr/local/bin/pkg-config
# checking pkg-config is at least version 0.9.0... yes
# checking whether pkg-config knows about alsa... configure: error: alsa.pc not found.. Do you need to set PKG_CONFIG_PATH?

[NOTE] Switch invariant was updated to ["ocaml-base-compiler" {= "4.03.0"} |
       "ocaml-system" {= "4.14.1"}]
       Use `opam switch set-invariant' to change it.


<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><>  🐫 
┌─ The following actions failed
│ λ build alsa 0.2.2
└─ 
┌─ The following changes have been performed (the rest was aborted)
│ ⊘ remove    liquidsoap               2.1.3
│ ⊘ remove    mm                       0.8.1
│ ⊘ remove    ppxlib                   0.28.0
│ ⊘ remove    sexplib0                 v0.15.1
│ ↘ downgrade angstrom                 0.15.0 to 0.12.1
│ ↘ downgrade bigstringaf              0.9.0 to 0.8.0
│ ↘ downgrade dtools                   0.4.4 to 0.4.1
│ ↘ downgrade dune-configurator        3.6.2 to 2.9.3
│ ↘ downgrade duppy                    0.9.2 to 0.8.0
│ ↘ downgrade ocaml                    4.14.1 to 4.03.0
│ ↘ downgrade ocaml-base-compiler      4.14.1 to 4.03.0
│ ↘ downgrade ocaml-compiler-libs      v0.12.4 to v0.9.0
│ ↘ downgrade ocaml-config             2 to 1
│ ↘ downgrade ocamlfind                1.9.5 to 1.9.1
│ ↘ downgrade pcre                     7.5.0 to 7.2.3
│ ↘ downgrade sedlex                   3.0 to 2.2
│ ↘ downgrade seq                      base to 0.3.1
│ ↘ downgrade uri                      4.2.0 to 1.3.12
│ ↻ recompile base-bytes               base
│ ↻ recompile camomile                 1.0.2
│ ↻ recompile csexp                    1.5.1
│ ↻ recompile dune                     3.6.2
│ ↻ recompile gen                      1.0
│ ↻ recompile menhir                   20220210
│ ↻ recompile menhirLib                20220210
│ ↻ recompile menhirSdk                20220210
│ ↻ recompile ocaml-syntax-shims       1.0.0
│ ↻ recompile ocamlbuild               0.14.2
│ ↻ recompile ocurl                    0.9.2
│ ↻ recompile ppx_derivers             1.2.1
│ ↻ recompile result                   1.5
│ ↻ recompile stdlib-shims             0.3.0
│ ↻ recompile stringext                1.6.0
│ ↻ recompile uchar                    0.0.2
│ ∗ install   bigarray-compat          1.1.0
│ ∗ install   jbuilder                 1.0+beta20.2
│ ∗ install   ocaml-migrate-parsetree  1.8.0
│ ∗ install   ocaml-secondary-compiler 4.08.1-1
│ ∗ install   ocamlfind-secondary      1.9.1
│ ∗ install   ppx_tools_versioned      5.2.3
│ ∗ install   re                       1.10.4
└─ 

The former state can be restored with:
    /usr/local/bin/opam switch import
"~/.opam/temp/.opam-switch/backup/state-20230208181004.export"
Or you can retry to install your package selection with:
    /usr/local/bin/opam install --restore